Subtraction and Addition 2

Math Busters Reproducible Worksheets

Reproducible Worksheets for:

Subtraction and Addition

These worksheets are reproducible for educational use only and are not for resale. © 2008 Enslow Publishers, Inc.

Math

BustersMath

Busters

2

Math Busters Reproducible Worksheets

Reproducible Worksheets for:

Subtraction and Addition

These worksheets practice math concepts explained in SSuubbttrraaccttiioonn aanndd AAddddiittiioonn(ISBN: 978-0-7660-2875-3), written by RReebbeeccccaa WWiinnggaarrdd--NNeellssoonn..

MMaatthh BBuusstteerrss SSuubbttrraaccttiioonn aanndd AAddddiittiioonn reproducible worksheets are designed to helpteachers, parents, and tutors use the books from the Math Busters series in theclassroom and the home. The answers to the problems are contained in the Answerssection starting on page 59.

Teachers, librarians, tutors, and parents are granted permission and encouraged tomake photocopies of these worksheets.

These worksheets are reproducible for educational use only and are not for resale. © 2008 Enslow Publishers, Inc.

Visit www.enslow.com and search for the MMaatthh BBuusstteerrss series to downloadworksheets for the following titles:

AAllggeebbrraa aanndd PPrree--AAllggeebbrraa FFiigguurriinngg OOuutt GGeeoommeettrryy978-0-7660-2879-1 978-0-7660-2880-7

DDeecciimmaallss aanndd FFrraaccttiioonnss RRaattiiooss aanndd PPeerrcceennttss978-0-7660-2877-7 978-0-7660-2878-4

DDiivviissiioonn aanndd MMuullttiipplliiccaattiioonn SSuubbttrraaccttiioonn aanndd AAddddiittiioonn978-0-7660-2876-0 978-0-7660-2875-3

Titles in this series can be purchased directly from:

Enslow Publishers, Inc.40 Industrial Road, Box 398Berkeley Heights, NJ 07922-0398 Phone: 1-800-398-2504email: [email protected]

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Adding Whole NumbersFind the number that will complete each one-digit addition fact.

a. 1 b. 6 c. 0 d. 4+ 0 + 0 + 5 + 1

e. 3 f. 0 g. 2 h. 5+ 2 + 2 + 0 + 0

i. 1 j. 6 k. 2 l. 1+ 2 + 2 + 3 + 3

m. 2 n. 5 o. 1 p. 9+ 6 + 1 + 7 + 0

q. 5 r. 2 s. 3 t. 5+ 4 + 7 + 3 + 3

3

Name _____________________________________ Date ___________________

© Enslow Publishers, Inc. Sheets are reproducible for educational use only.

Adding Whole NumbersFind the number that will complete each one-digit addition fact.

a. 8 + 0 = ______ b. 1 + 6 = ______ c. 2 + 2 = ______

d. 3 + 5 = ______ e. 7 + 2 = ______ f. 0 + 0 = ______

g. 6 + 1 = ______ h. 2 + 5 = ______ i. 8 + 1 = ______

Write the addition fact that will solve each problem. Then writethe answer in a complete sentence.

Example: James ate 3 corn chips. Then he ate 4 more. How manycorn chips did James eat in all?

j. Caleb went to the principal’s office 3 times in the morning. Then he went 1 more time in the afternoon. How many times did Caleb go to the principal’s office?

k. Autumn put 4 marbles in a jar. Then she put in 5 more. How many marbles did Autumn put in the jar all together?

Name _____________________________________ Date ___________________

3 + 4 = 7. James ate 7 corn chips in all.

4


Regrouping Power: AdditionFind the number that will complete each one-digit addition fact.

a. 2 b. 6 c. 8 d. 9+ 8 + 9 + 8 + 1

e. 3 f. 7 g. 9 h. 5+ 7 + 3 + 4 + 8

i. 1 j. 6 k. 9 l. 8+ 9 + 6 + 8 + 6

m. 9 n. 7 o. 5 p. 8+ 9 + 8 + 9 + 4

q. 5 r. 7 s. 2 t. 8+ 5 + 4 + 9 + 5

5

Name _____________________________________ Date ___________________


Regrouping Power: AdditionFind the number that will complete each one-digit addition fact.

a. 8 + 7 = ______ b. 4 + 9 = ______ c. 7 + 5 = ______

d. 6 + 8 = ______ e. 4 + 6 = ______ f. 9 + 5 = ______

g. 9 + 3 = ______ h. 4 + 7 = ______ i. 8 + 2 = ______

Write the addition fact that will solve each problem. Then writethe answer in a complete sentence.

Example: There were 8 turtles floating on a log and 9 more turtleslying on the shore. How many turtles were there in all?

j. Jessica worked 6 hours one day and 4 hours the next day. Howmany hours did Jessica work?

k. Bob and Mary went fishing. Bob caught 7 fish. Mary also caught 7 fish. Together, how many fish did they catch?

Name _____________________________________ Date ___________________

6


8 + 9 = 17. There were 17 turtles in all.

Adding Larger NumbersFind the sum.

Example: Add 52 + 23. Step 1: Add ones. 52 Step 2: Add tens 52+ 23 + 23

5 75

a. 27 + 31 b. 46 + 32 c. 81 + 18 d. 20 + 31

e. 56 + 22 f. 15 + 1 g. 49 + 30 h. 62 + 37

i. 12 j. 35 k. 26 l. 1 3+ 72 + 34 + 3 + 24

m. 615 n. 702 o. 144 p. 61 1+ 323 + 106 + 15 + 276

7

Name _____________________________________ Date ___________________


Adding Larger NumbersFind the sum.

a. 324 b. 645 c. 243 d. 1 03+ 21 + 24 + 452 + 204

e. 201 1 f. 7302 g. 6514 h. 1 321+ 1924 + 460 + 2413 + 6048

Write an addition equation to solve each problem. Then write theanswer in a complete sentence.

Example: One tour boat can carry 42 passengers. Another can carry 36. How many people can tour on both boats?

i. The seventh-graders read 126 books in September and 313 books in October. How many books did they read in all?

j. The Colts had 32 points, then they scored another 7 points. How many points did they have?

Name __________________________________ Date ___________________

8


42 + 36 = 78. 78 people can tour on both boats.

Multi-Digit Regrouping: AdditionFind the sum. Regroup as needed.

Example: 85 Step 1: Add ones. 85 Step 2: Add tens. 85+ 37 Regroup. + 37 + 37

2 122

a. 38 b. 52 c. 64 d. 15+ 24 + 39 + 6 + 15

e. 19 f. 55 g. 28 h. 25+ 3 + 8 + 35 + 76

i. 416 j. 149 k. 255 l. 729+ 35 + 57 + 307 + 422

m. 865 n. 4251 o. 6224 p. 7048+ 146 + 757 + 839 + 6361

9

Name __________________________________ Date ___________________


1

Multi-Digit Regrouping: AdditionFind the sum. Regroup as needed.

Example: Add 48 + 46. Step 1: Add ones. 48 Step 2: Add tens. 48Regroup. + 46 + 46

4 94

a. 64 b. 265 c. 654 d. 215+ 36 + 97 + 39 + 737

e. 582 f. 941 g. 8216 h. 7447+ 237 + 521 + 695 + 7447

Write an addition equation to solve each problem. Then write theanswer in a complete sentence.

Name __________________________________ Date ___________________

10


1 1

i. If each year has 365 days, how many days are there in two years?

j. Madeline sold 83 candy barsone week and 59 the next. How many candy bars did she sell over the two weeks?

Addition PropertiesTThhee CCoommmmuuttaattiivvee PPrrooppeerrttyy:: Changing the order of the addends does not

change the sum.

Add each set of numbers to test the commutative property.

a. 5 + 2 = ______ b. 7 + 1 = ______ c. 8 + 9 = ______

2 + 5 = ______ 1 + 7 = ______ 9 + 8 = ______

d. 22 36 e. 16 54+ 36 + 22 + 54 + 16

TThhee AAssssoocciiaattiivvee PPrrooppeerrttyy:: Changing the grouping of the addends does not change the sum.

Add each set of numbers to test the associative property. Add thenumbers inside the parentheses first.

f. (6 + 3) + 1 = ______ g. (5 + 2) + 6 = ______

6 + (3 + 1) = ______ 5 + (2 + 6) = ______

h. (20 + 6) + 10 = ______ i. (8 + 7) + 3 = ______

20 + (6 + 10) = ______ 8 + (7 + 3) = ______

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Name _____________________________________ Date ___________________


Addition PropertiesTThhee ZZeerroo PPrrooppeerrttyy:: The sum of any number and zero is the

original number.

a. 6 + 0 = ______ b. 0 + 8 = ______ c. 12 + 0 = ______

d. 23 + 0 = ______ e. 0 + 52 = ______ f. 415 + 0 = ______

g. 9 h. 0 i. 37 j. 927+ 0 + 4 + 0 + 0

Name the property illustrated.

k. 12 + 7 = 197 + 12 = 19

l. 14 + 0 = 14

m. (2 + 6) + 3 = 112 + (6 + 3) = 11

Name __________________________________ Date ___________________

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Subtracting Whole NumbersFind the number that will complete each one-digit subtraction fact.

a. 1 b. 6 c. 5 d. 4– 0 – 0 – 1 – 2

e. 3 f. 9 g. 6 h. 8– 3 – 4 – 3 – 7

i. 7 j. 8 k. 2 l. 5– 4 – 5 – 0 – 5

m. 6 n. 8 o. 0 p. 9– 5 – 8 – 0 – 2

q. 9 r. 3 s. 7 t. 4– 7 – 2 – 0

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Name _____________________________________ Date ___________________


– 1

Subtracting Whole NumbersFind the number that will complete each one-digit subtraction fact.

a. 8 – 0 = ______ b. 1 – 1 = ______ c. 9 – 1 = ______

d. 5 – 4 = ______ e. 8 – 6 = ______ f. 9 – 9 = ______

g. 6 – 2 = ______ h. 7 – 1 = ______ i. 8 – 4 = ______

Write the subtraction fact that will solve each problem. Then writethe answer in a complete sentence.

Example: Bill took 4 cookies for lunch. He ate 1 cookie and gave therest away. How many cookies did he give away?

j. Shawna has 7 pencils. 3 of the pencils are green. The rest are blue. How many blue pencils does she have?

k. Meghan’s cat had 9 kittens. None of the kittens are white. How many of the kittens are not white?

Name __________________________________ Date ___________________

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4 – 1 = 3. Bill gave away 3 cookies.

Inverse OperationsComplete each fact, then list the three other related addition andsubtraction facts.

Example: 4 + 5

4 + 5 = 9 9 – 5 = 4

5 + 4 = 9 9 – 4 = 5

a. 6 + 1 b. 0 + 5

c. 5 – 3 d. 7 – 5

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Name _____________________________________ Date ___________________


Inverse OperationsSolve each problem. Then use the inverse operation to check.

Example: 8 – 5 8 Check: 3– 5 + 5

3 8

a. 7 – 0 b. 9 – 8 c. 6 – 4

d. 3 + 4 e. 9 – 3 f. 5 + 1

Name two reasons to use subtraction.

Name __________________________________ Date ___________________

16


Subtracting Larger NumbersFind the difference.

Example: Subtract 64 – 21.

Step 1: Subtract ones. 64 Step 2: Subtract tens. 64– 2 1 – 2 1

3 43

a. 36 – 11 b. 56 – 32 c. 70 – 20 d. 98 – 66

e. 14 – 3 f. 25 – 14 g. 49 – 18 h. 67 – 30

i. 72 j. 35 k. 16 l. 29– 2 1 – 34 – 6 – 1 3

m. 608 n. 457 o. 872 p. 1 1 6– 203 – 216 – 105

17


Name __________________________________ Date ___________________

– 2 1

Subtracting Larger NumbersFind the difference.

a. 419 b. 723 c. 651 d. 708– 10 – 22 – 421 – 204

e. 6512 f. 8528 g. 6697 h. 1892– 141 1 – 127 – 2534 – 200

Write a subtraction equation to solve each problem. Then writethe answer in a complete sentence.

Example: This year, 2,155 people went to the school play. The schoolconcert was attended by 1,130 people. How many morepeople went to the play?

i. Ben scored 627 points playing the snake game on his cell phone. Will scored 515 points. How many more points did Ben score?

j. Marci needs $938 for a new computer. She has saved $912. How much more money does she need?

Name __________________________________ Date ___________________

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2155 – 1130 = 1025. There were 1,025 more people at the play.

Regrouping Power: SubtractionRegroup to find the difference.

Example: 80 – 23

7 10 7 10 7 10Step 1: Regroup. 80 Step 2: Subtract 80 Step 2: Subtract 80

– 23 ones. – 23 tens. – 237 57

a. 23 b. 16 c. 20 d. 82– 9 – 7 – 8 – 4

e. 13 f. 22 g. 54 h. 15– 5 – 4 – 7 – 8

i. 1 1 j. 26 k. 35 l. 62– 9 – 17 – 19 – 27

m. 40 n. 67 o. 13 p. 64– 27 – 8 – 6 – 15

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Name __________________________________ Date ___________________


Regrouping Power: SubtractionRegroup to find the difference.

a. 16 – 8 = ______ b. 36 – 9 = ______ c. 32 – 7 = ______

d. 21 – 13 = ______ e. 50 – 6 = ______ f. 83 – 5 = ______

g. 41 – 34 = ______ h. 44 – 15 = ______ i. 25 – 15 = ______

Write the subtraction equation that will solve each problem. Then write the answer in a complete sentence.

Example: Jeremy started with 32 bricks. He used 15 bricks. How many are left?

j. Michelle is 56 inches tall. Kara is 47 inches tall. How much taller than Kara is Michelle?

k. Francine had $41. She spent $25 at the football game. How much money does she have left?

Name __________________________________ Date ___________________

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32 – 15 = 17. Jeremy has 17 bricks left.

Multi-Digit Regrouping: SubtractionFind the difference. Regroup as needed.

Example: 230 – 47 1 12 1 12

2 10 2 10 2 10Step 1: Regroup. 230 Step 2: Regroup. 230 Step 3: Subtract 230

Subtract – 47 Subtract – 47 hundreds. – 47ones. 3 tens. 83 183

a. 324 b. 446 c. 512 d. 824– 99 – 257 – 27 – 430

e. 720 f. 918 g. 600 h. 707– 573 – 598 – 402 – 43

i. 2789 j. 5657 k. 6671 l. 4000– 826 – 2848 – 292 – 1905

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Name __________________________________ Date ___________________


Multi-Digit Regrouping: SubtractionFind the difference. Regroup as needed.

a. 42,434 b. 73,623 c. 22,641– 41,056 – 55,843 – 3,049

d. 6,804 e. 20,000 f. 803,241– 705 – 7,266 – 62, 195

Write a subtraction equation to solve each problem. Write youranswer in a complete sentence.

g. Chef Pierre made 2,500 servings of bread. There were 1,768 servings of bread used. How many servings were left?

h. One year in a city, there were 8,696 restaurants. The followingyear, there were 8,943 restaurants. How many more restaurants were there in the second year?

Name __________________________________ Date ___________________

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Mental Math Power: AdditionUse mental math to add.

a. 28 + 10 = ______ b. 28 + 9 = ______ c. 33 + 10 = ______

d. 33 + 9 = ______ e. 14 + 10 = ______ f. 14 + 9 = ______

g. 86 + 9 = ______ h. 95 + 9 = ______ i. 67 + 9 = ______

j. 56 + 9 = ______ k. 102 + 9 = ______ l. 31 + 9 = ______

m. 365 + 100 = ______ n. 365 + 99 = ______

o. 821 + 100 = ______ p. 821 + 99 = ______

q. 536 + 100 = ______ r. 536 + 99 = ______

s. 642 + 99 = ______ t. 437 + 99 = ______

u. 329 + 99 = ______ v. 745 + 99 = ______

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Name __________________________________ Date ___________________


Mental Math Power: AdditionAdd mentally by first making groups of 10.

Example: 9 + 3 + 7 + 1 + 2

a. 4 + 3 + 6 + 7 = ______ b. 8 + 2 + 6 = ______

c. 8 + 9 + 1 = ______ d. 5 + 6 + 4 + 5 + 3 = ______

Use mental math to add.

e. 27 + 23 = ______ f. 416 + 30 = ______

g. 300 + 268 = ______ h. 2,000 + 2,000 = ______

i. 19 + 45 = ______ j. 65 + 35 = ______

k. 50 + 125 = ______ l. 1,200 + 400 = ______

m. 802 + 151 = ______ n. 3,421 + 999 = ______

Name __________________________________ Date ___________________

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10 + 10 + 2 = 22

Mental Math Power: SubtractionUse mental math to subtract.

a. 43 – 10 = ______ b. 43 – 9 = ______ c. 56 – 10 = ______

d. 56 – 9 = ______ e. 24 – 10 = ______ f. 24 – 9 = ______

g. 19 – 9 = ______ h. 25 – 9 = ______ i. 118 – 9 = ______

j. 82 – 9 = ______ k. 61 – 9 = ______ l. 90 – 9 = ______

m. 451 – 100 = ______ n. 451 – 99 = ______

o. 867 – 100 = ______ p. 867 – 99 = ______

q. 124 – 100 = ______ r. 124 – 99 = ______

s. 908 – 99 = ______ t. 416 – 99 = ______

u. 258 – 99 = ______ v. 700 – 99 = ______

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Name __________________________________ Date ___________________


Mental Math Power: SubtractionSubtract mentally by counting up.

Example: 400 – 298 Think: From 298 to 300 is 2.Think: From 300 to 400 is 100 more. Think: 100 + 2 = 102, so 400 – 298 = 102

a. 250 – 198 = ______ b. 500 – 125 = ______

c. 600 – 546 = ______ d. 320 – 297 = ______

Use mental math to subtract.

e. 474 – 74 = ______ f. 627 – 28 = ______

g. 400 – 268 = ______ h. 4,256 – 4,256 = ______

i. 352 – 297 = ______ j. 65 – 35 = ______

k. 150 – 125 = ______ l. 720 – 300 = ______

m. 7,263 – 999 = ______ n. 807 – 780 = ______

Name __________________________________ Date ___________________

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Estimation Power: AdditionUse rounding to estimate each sum.

Example: 27 Step 1: Round each addend 27 30 Step 2: Add. 30+ 52 to the greatest + 52 + 50 + 50

place value, tens. 8027 + 52 is about 80.

a. 48 50 b. 19 c. 81+ 34 + 30 + 9 + 64

d. 97 e. 64 f. 15+ 97 + 88 + 33

g. 1 76 h. 592 i. 21 2+ 238 + 449 + 630

j. 614 k. 1268 l. 490+ 39 + 508 + 58

m. 92,452 n. 83,230 o. 5,559+ 61,307 + 6,9 12 + 293

27

Name __________________________________ Date ___________________


Estimation Power: AdditionEstimate each sum by adding only the front digits, then adjust.

Example: 263 Step 1: Add only the 263 Step 2: Adjust for the next place.+ 531 front digits. + 53 1 60 + 30 is almost

7?? another 100. 700 + 100 = 800, so263 + 531 is about 800.

a. 29 b. 68 c. 213+ 13 + 23 + 101

d. 5,423 e. 3,612 f. 33,641+ 2,497 + 4,501 + 64,258

Estimate each answer using an addition equation. Write youranswer using the correct units.

g. Bruce drove 623 miles on Monday. On Tuesday, he droveanother 364 miles. About how many miles did Bruce drive?

h. Cassie went to 52 dance classes last year. This year, she went to 153 dance classes. About how many dance classes has Cassie gone to over the two years?

Name __________________________________ Date ___________________

28


Estimation Power: SubtractionUse rounding to estimate each difference.

Example: 483 – 202 483 – 202

Step 1: Round each number to the greatest place value, hundreds. 500 – 200

Step 2: Subtract. 500 – 200 = 300 483 – 202 is about 300.

a. 87 – 23 b. 651 – 157 c. 804 – 386

About _____

d. 97 – 21 e. 492 – 68 f. 37 – 12

g. 5,872 – 3,107 h. 861 – 187 i. 170 – 92

j. 84 k. 413 l. 6,280– 39 – 275 – 5,890

m. 119 n. 264 o. 3,741– 87 – 152 – 1,629

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Name __________________________________ Date ___________________


Estimation Power: SubtractionUse compatible numbers to estimate.

Example: 478 – 132 478 – 132

Step 1: Chose numbers that work well together 478 is close to 475.and are close to the original numbers. 132 is close to 125.

Step 2: Subtract. 475 – 125 = 350

478 – 132 is about 350.

a. 447 – 252 b. 309 – 160 c. 1,260 – 761

Estimate by rounding Estimate by rounding Find the exactto the hundreds place. to the tens place. difference.

d. 637 e. 637 f. 637– 268 – 268 – 268

g. Which estimate was closer to the exact answer, the one you rounded to the hundreds place or to the tens place?

Estimate by rounding Estimate by rounding Find the exactto the thousands place. to the hundreds place. difference.

h. 8,456 i. 8,456 j. 8,456– 3,502 – 3,502 – 3,502

k. Which estimate was closer to the exact answer?

Name __________________________________ Date ___________________

30


Word Problem Power: Addition

a. Robert made fruit smoothies using 1 pineapple, 4 peaches, 3 mangos, and 16 strawberries. How many pieces of fruit did Robert use for the smoothies?

b. Janine used 21 gallons of fuel in her van last week. She used another 19 gallons of fuel this week. How many gallons of fuel did she use in the two weeks?

c. Rahsaan spent $229 on a bicycle. He spent another $52 on a helmet. How much money did he spend in all?

d. There are 5,622 people living in the town of Maron. There are 2,786 people living in the town of Temple. How many people are living in the two towns combined?

e. Gloria bought a 144-ounce jar of crunchy peanut butter. She also bought a 56-ounce jar of creamy peanut butter. How many ounces of peanut butter did Gloria buy?

31

Name __________________________________ Date ___________________


Word Problem Power: Addition

a. Carla drove 768 miles to attend a wedding. Then she drove another 210 miles to visit her uncle. Finally, she drove 862 miles to get back home. How many miles did Carla drive in all?

b. Benjamin ran 3,241 meters. Lory ran 3,569 meters. How many meters did they run in all?

c. Jeremy has 37 stuffed toy pigs. He also has 18 stuffed toy dogs. How many stuffed animals does Jeremy have all together?

d. Jill and Katie planted 1,444 tulip bulbs in the fall. They planted another 523 tulip bulbs the following spring. Estimate the total number of tulip bulbs they planted.

e. On Monday, 16,427 vehicles crossed Sherman Bridge. On Tuesday, another 23,621 vehicles crossed the bridge. About how many vehicles crossed Sherman bridge in the two days?

Name __________________________________ Date ___________________

32


Word Problem Power: Subtraction

a. Max took 20 crackers out of the box. Then he put 6 back. How many crackers did Max keep?

b. The owner of a flower shop purchased 200 roses. She used 163 in arrangements. How many roses were left?

c. Latoya had $79. She bought two CDs and a new pair of jeans fora total of $48. How much money did Latoya have left?

d. Today, 436 students purchased lunches in the cafeteria. There were 78 students who brought their own lunches. How many more students purchased lunch than brought their own?

e. Gloria bought a 144-ounce jar of crunchy peanut butter. She also bought a 56-ounce jar of creamy peanut butter. How many more ounces were in the crunchy peanut butter jar?

33

Name __________________________________ Date ___________________


Word Problem Power: Subtraction

a. On vacation, Rachel’s family traveled 428 kilometers. Her friend Jackson’s family traveled 642 kilometers. How much farther did Jackson’s family travel?

b. Students in the sixth grade took two buses to the art museum. There were 102 student on the trip. 56 students rode on the firstbus. How many students rode on the second bus?

c. Mr. Nagasaki has 32,682 frequent flyer miles so far this year. He thinks he will have 150,000 by the end of the year. About how many more miles does Mr. Nagasaki think he will be flying?

d. Theo paid $268 for four tickets for pavilion seating at a concert.If he had gotten lawn seats instead, he would have paid $49. About how much could he have saved with lawn seats?

e. On Thursday, 22,219 vehicles crossed Sherman Bridge. On Friday, 37,912 vehicles crossed the bridge. About how many more vehicles crossed on Friday than crossed on Thursday?

Name __________________________________ Date ___________________

34


Adding TimeExample: Add 2 hours 10 minutes + 6 hours 35 minutes.

Step 1: Add minutes. Step 2: Add hours.2 hours 10 minutes 2 hours 10 minutes

+ 6 hours 35 minutes + 6 hours 35 minutes45 minutes 8 hours 45 minutes

a. 4 hours 9 minutes b. 12 hours 26 minutes+ 3 hours 16 minutes + 9 hours 18 minutes

c. 6 hours 37 minutes d. 8 hours 42 minutes+ 6 hours 12 minutes + 5 hours 16 minutes

e. 32 minutes 40 seconds f. 40 minutes 50 seconds+ 9 minutes 9 seconds + 14 minutes 8 seconds

g. 2 weeks 3 days h. 25 years 3 months+ 1 week 1 day + 13 years 8 months

i. Harold spent 2 hours and 20 minutes working on a science report. He spent 1 hour and 12 minutes on a math paper. How long did he spend on both subjects combined?

35

Name __________________________________ Date ___________________


Adding Time with RegroupingExample: Add 6 hours 35 minutes + 6 hours 35 minutes.

Step 1: Add minutes. Step 2: Regroup. Step 3: Add hours.1 1

6 hours 35 minutes 6 hours 35 minutes 6 hours 35 minutes+ 6 hours 35 minutes + 6 hours 35 minutes + 6 hours 35 minutes

70 minutes 10 minutes 13 hours 10 minutes

a. 5 weeks 6 days b. 12 weeks 4 days+ 3 weeks 3 days + 9 weeks 4 days

c. 9 hours 27 minutes d. 16 hours 54 minutes+ 6 hours 48 minutes + 5 hours 36 minutes

e. 32 days 20 hours f. 40 minutes 50 seconds+ 9 days 9 hours + 14 minutes 10 seconds

g. 2 hours 30 minutes h. 19 years 6 months+ 1 hour 36 minutes + 12 years 8 months

i. Belinda lived in an apartment for 3 years and 9 months. Then she moved to another apartment for 10 more months. How long did Belinda live in apartments?

Name __________________________________ Date ___________________

36


Subtracting Time Example: Subtract 6 minutes 35 seconds – 3 minutes 45 seconds.

Step 1: Regroup as needed. Step 2: Subtract seconds. Step 3: Subtract minutes.5 95 5 95 5 95 6 minutes 35 seconds 6 minutes 35 seconds 6 minutes 35 seconds

– 3 minutes 45 seconds – 3 minutes 45 seconds – 3 minutes 45 seconds50 seconds 2 minutes 50 seconds

a. 8 minutes 23 seconds b. 30 minutes 29 seconds– 1 minute 27 seconds – 29 minutes 42 seconds

c. 42 minutes 16 seconds d. 9 minutes 59 seconds– 10 minutes 20 seconds – 6 minutes 18 seconds

e. 6 hours 14 minutes f. 12 hours 40 minutes– 4 hours 16 minutes – 5 hours 58 minutes

g. 8 weeks 4 days h. 9 years 6 months– 3 weeks 6 days – 8 years 8 months

i. Jane has kittens that are 7 weeks and 2 days old. They got their first vaccinations 1 week and 3 days ago. How old were the kittens when they were vaccinated?

37

Name __________________________________ Date ___________________


Elapsed TimeFind the elapsed time.

a. A movie began at 7:20 PM and ended at 8:45 PM. How long did the movie last?

b. Michael woke up at 6:45 AM. He got on the bus at 8:15 AM. How much time had passed?

c. Joanne finished a race in 2 minutes 38 seconds. Lynette finished after Joanne in 3 minutes 15 seconds. How much time passed between Joanne’s and Lynette’s crossing the finish line?

d. Toby the puppy visited the vet when he was 6 weeks and 3 days old. He visited again when he was 8 weeks and 6 days old. How much time had passed?

e. Alaine answered the phone at 5:23 PM. She hung up at 5:40 PM.How much time had passed?

f. Luke started cleaning his room at 10:47 AM. He finished at 2:31 PM. How much time had passed?

Name __________________________________ Date ___________________

38


Adding DecimalsExample: Add 0.2 + 6.1

Step 1: Line up the 0.2 Step 2: Add. 0.2 Remember to putdecimal points. + 6.1 + 6.1 the decimal point

6.3 in the answer.

a. 5.6 + 1.1 b. 4.3 + 0.6 c. 0.2 + 0.2

d. 6.5 + 3.3 e. 0.02 + 0.51 f. 0.72 + 1.36

g. 8.8 + 0.3 h. 6.2 + 9.2 i. 4.261 + 3.333

j. 4.2 k. 16.51 l. 4.213 m. 1.092+ 7.9 + 19.52 + 6.589 + 2.743

n. 8.15 o. 19.1 p. 20.06 q. 3.984+ 8.1 + 1 .06 + 42. 1 8 + 0.26

39

Name __________________________________ Date ___________________


Adding Decimals

a. 26.24 + 3.71 b. 0.63 + 0.63 c. 9.96 + 6.1

d. 0.04 + 0.08 e. 4.27 + 5.34 f. 6.5 + 4.5

g. 10.68 + 8.2 h. 0.02 + 0.002 i. 321.6 + 25.72

Solve each problem using an addition equation.

j. Mary has a 4.2-liter and a 6.0-liter container for water. How many liters of water will the containers hold in all?

k. Tori and Jenna walk a 2.28-kilometer path together every day. How many kilometers do they walk combined?

l. There was a snowfall of 12.6 centimeters one week. The next week, there was a snowfall of 3.45 centimeters. What was the total snowfall for both weeks?

Name __________________________________ Date ___________________

40


Subtracting DecimalsExample: Subtract 8.5 – 2.2

Step 1: Line up the 8.5 Step 2: Subtract. 8.5 Remember to putdecimal points. – 2. 2 – 2. 2 the decimal point

6.3 in the answer.

a. 6.4 – 1.1 b. 0.97 – 0.04 c. 4.26 – 1.49

d. 32.4 – 16.9 e. 3.47 – 1.2 f. 94.08 – 13.42

g. 11.16 – 4.2 h. 7.97 – 3.24 i. 3.9 – 0.27

j. 36.02 k. 149.7 l. 51.8 m. 1 .72– 7.44 – 82.91 – 1.9 – 0.8

n. 17.6 o. 39.02 p. 112.01 q. 0.35– 3.8 – 27.61 – 111.99 – 0.057

41

Name __________________________________ Date ___________________


Subtracting Decimals

a. 9.2 – 6.75 b. 50.32 – 7.2 c. 22 – 8.01

d. 3.19 – 0.68 e. 0.85 – 0.59 f. 60.1 – 58.67

g. 4.93 – 3.16 h. 2.1 – 0.9 i. 74 – 47.4

Solve each problem using a subtraction equation.

j. Kevin finished a race in 56.25 seconds. Marcus finished the same race in 55.7 seconds. What was the difference in their times?

k. One pencil is 10.2 cm long. Another is 6.95 cm long. What is the difference in length?

l. This morning Meghan had a temperature of 98.9°F. Last night she had a temperature of 100.6°F. How much did her temperature change?

Name __________________________________ Date ___________________

42


Adding MoneyExample: Add $12.30 + $20.00

Step 1: Line up the $ 12.30 Step 2: Add. $ 12.30decimal points. + $20.00 + $20.00

$32.30Remember to put the dollar sign and decimal point in the answer.

a. $1.50 + $2.25 b. $6.00 + $5.50 c. $1.35 + $2.10

d. $12.65 + $4.25 e. $10.00 + $5.75 f. $8.60 + $0.62

g. What is the value of 2 quarters, 5 dimes, and 3 pennies?

h. What is the value of 2 ten-dollar bills, 2 one-dollar bills,1 quarter, and 3 nickels?

i. What is the value of 1 fifty-dollar bill, 3 five-dollar bills, 3 quarters, and 1 penny?

43

Name __________________________________ Date ___________________


Adding Money

a. $16.42 + $19.78 b. $12.99 + $12.99 c. $0.30 + $0.30

d. $6.25 + $1.75 e. $23.97 + $8.00 f. $40.00 + $13.32

g. Thom has 3 one-dollar bills, 2 quarters, and a nickel. How much money does he have in all?

h. Jenny has 1 five-dollar bill, 1 one-dollar bill, 1 quarter, and 6 pennies. How much money does she have in all?

i. Garrett had $16.52. Mr. Wendt paid him $25.00 for computer work. How much money does Garrett have now?

j. Will called his mother in Scotland two times thisweek. The first call cost $23.42. The second call cost$6.74. How much did the two calls cost?

Name __________________________________ Date ___________________

44


Subtracting MoneyExample: Subtract $9.54 – $2.38.

4 14Step 1: Line up the $ 9.54 Step 2: Subtract. $ 9.54

decimal points. + $ 2.38 + $ 2.38$7. 16

Remember to put the dollar sign and decimal point in the answer.

a. $8.98 – $0.67 b. $9.54 – $2.38 c. $6.14 – $0.25

d. $5.03 – $1.27 e. $6.50 – $5.50 f. $13.86 – $13.42

g. $12.99 – $4.20 h. $45.22 – $37.50 i. $16.00 – $15.11

j. $52.31 k. $27.09 l. $30.00 m. $50.00– $24.57 – $ 9.50 – $23.90 – $49.75

n. $162.36 o. $65.65 p. $87.41 q. $23.58– $ 89.99 – $41 .16 – $32.41 – $ 9.10

45

Name __________________________________ Date ___________________


Making Change

Find the correct change by subtracting or counting up.

Name __________________________________ Date ___________________

46


CCoosstt ooff IItteemm AAmmoouunntt PPaaiidd CChhaannggee

Example: $5.20 $6.00 $0.80

$14.20 $20.00 a.

$0.68 $5.00 b.

$9.32 $20.00 c.

$132.50 $200.00 d.

$125.00 $150.00 e.

$1.47 $5.00 f.

$14.23 $15.00 g.

$2.39 $10.00 h.

$21.85 $30.00 i.

$4.22 $10.00 j.

$3.16 $5.00 k.

$6.78 $10.00 l.

Adding Like IntegersExample: Add –8 + –7.

Step 1: Pretend the signs are not there. –8 + –7Step 2: Add. 8 + 7 = 15Step 3: Put the same sign on the sum. –8 + –7 = –15

a. –4 + –2 = ______ b. +6 + +4 = ______ c. –14 + –8 = ______

d. –9 + –10 = ______ e. –21 + –13 = ______ f. +7 + +2 = ______

g. +55 + +42 = ______ h. –27 + –81 = ______ i. +4 + +3 = ______

j. –11 + –4 = ______ k. –6 + –7 = ______ l. +8 + +2 = ______

m. +13 + 0 = ______ n. –3 + –9 = ______ o. –6 + –4 = ______

Write an integer equation for this problem and solve it. Write theanswer in a complete sentence.

p. Michael owed his mother $3. He borrowed another $3. How much money does Michael owe his mother now?

47

Name __________________________________ Date ___________________


Adding Unlike IntegersExample: Add –8 + +3.

Step 1: Pretend the signs are not there. –8 +3 8 3Step 2: Subtract the smaller number from the larger number. 8 – 3 = 5Step 3: Put the sign of the larger number on the sum. –8 + +3 = –5

a. –6 + +2 = ______ b. +7 + –3 = ______ c. –4 + +8 = ______

d. –15 + +6 = ______ e. +11 + –2 = ______ f. +7 + –14 = ______

g. –5 + +16 = ______ h. +4 + –5 = ______ i. –9 + +6 = ______

j. –10 + +20 = ______ k. –21 + +14 = ______ l. –5 + +8 = ______

m. –40 + +30 = ______ n. +33 + –65 = ______ o. –3 + 0 = ______

Write an integer equation for this problem and solve it. Write theanswer in a complete sentence

p. Michael owed his mother $6. He paid her $4. How much money does Michael owe his mother now?

Name __________________________________ Date ___________________

48


Subtracting IntegersExample: Subtract –6 – +3.

Step 1: Change the problem to addition. Step 2: Add.–6 – +3 becomes –6 + –3 –6 + –3 = –9

a. –6 – +2 = ______ b. +7 – –3 = ______ c. –4 – +8 = ______

d. –15 – +6 = ______ e. +11 – –2 = ______ f. +7 – –14 = ______

g. –5 – +16 = ______ h. +4 – –5 = ______ i. –9 – +6 = ______

j. –10 – +20 = ______ k. –21 – +14 = ______ l. –5 – +8 = ______

m. –40 – +30 = ______ n. +33 – –65 = ______ o. –3 – 0 = ______

Write an integer equation for this problem and solve it. Write theanswer in a complete sentence.

p. The town Jamie lives in is 20 feet above sea level. The town his grandparents live in is 16 feet below sea level. What is the difference in altitude?

49

Name __________________________________ Date ___________________


Subtracting Integers

a. –4 – –2 = ______ b. +6 – +4 = ______ c. –14 – –8 = ______

d. –9 – –10 = ______ e. –21 – –13 = ______ f. +7 – +2 = ______

g. +55 – +42 = ______ h. –27 – –81 = ______ i. +4 – +3 = ______

j. –11 – –4 = ______ k. +6 – +7 = ______ l. +8 – +2 = ______

m. +13 – 0 = ______ n. –3 – –9 = ______ o. –6 – –4 = ______

Write an integer equation for each problem and solve it. Write theanswer in a complete sentence.

p. The temperature on January 8 was +3°F. January 9 had a temperature of +6°F.What was the difference in temperature?

q. The town Kendra lives in is 10 feet below sea level. The town where she goes on vacation is 32 feet below sea level. What is the difference in altitude?

Name __________________________________ Date ___________________

50


Adding Like FractionsExample: Add

13

+13

.

Step 1: Add the numerators. Step 2: Keep the same denominator.13

+13

= 1 + 1

= 2 1

3+

13

= 23

a. 14

+ 24

= b. 36

+ 26

= c. 18

+ 48

=

d. 25

+ 25

= e. 512

+ 212

= f. 39

+ 29

=

g. 310

+ 410

= h. 12

+ 12

= i. 314

+ 1014

=

j. 57

+ 17

= k. 24

+ 14

= l. 38

+ 38

=

Write a fraction equation for this problem and solve it. Write the answer in a complete sentence.

m. In a town, 35 of the houses are painted white. Another 1

5 are

painted yellow. What fraction of the houses are painted either

white or yellow?

51

Name __________________________________ Date ___________________


Adding Unlike FractionsExample: Add

12

+14

.

Step 1: Give the fractions a Step 2: Add the numerators.common denominator. Keep the same denominator.12

= 21 � 2

� 2=

24

24

+14

= 2 + 1

4=

34

a. 13

+ 16

= b. 23

+ 19

= c. 15

+ 310

=

d. 112

+ 34

= e. 112

+ 23

= f. 512

+ 12

=

g. 67100

+ 310

= h. 316

+ 14

= i. 16

+ 12

=


j. Nancy did 12 of her math homework during study hall.

She did another 13 while she waited for her bus. What fraction

of her homework did Nancy do before she went home?

Name __________________________________ Date ___________________

52


Subtracting Like FractionsExample: Subtract

23

–13

.

Step 1: Subtract the numerators. Step 2: Keep the same denominator.23

–13

= 2 – 1

= 1 2

3–

13

= 13

a. 34

–24

= b. 710

–410

= c. 57

– 17

=

d. 1 114

–1014

= e. 512

– 212

= f. 39

– 29

=

g. 512

–312

= h. 1220

– 7

20= i. 21

32–

832

=

j. 47

–27

= k. 60100

–23100

= l. 611

–211

=


m. There was 38 of a pizza left. Then Bart ate another 28 of the pizza.

What fraction of the pizza is left?

53

Name __________________________________ Date ___________________


Subtracting Unlike FractionsExample: Subtract

12

–14

.

Step 1: Give the fractions a Step 2: Subtract the numerators.common denominator. Keep the same denominator.12

= 21 � 2

� 2=

24

24

– 14

= 2 – 1

4=

14

a. 25

– 310

= b. 34

–12

= c. 78

– 34

=

d. 12

– 16

= e. 23

– 19

= f. 12

– 13

=

g. 37100

– 310

= h. 1112

– 23

= i. 716

– 14

=


j. Paul had 13 of his house left to paint when he ate his lunch.

After lunch, he painted another 14 then took a break.

How much was left to paint after his break?

Name __________________________________ Date ___________________

54


Adding Mixed NumbersExample: Add 6 1

3+ 2 1

3.

Step 1: Add the fractions. 13

+ 13

= 23

Step 2: Add the whole numbers. 6 + 2 = 8

Step 3: Combine the sums. 8 23

613

+ 2 13

= 8 23

a. 3 14

+ 4 24

= b. 7 25

+ 6 25

= c. 12 312

+ 10 812

=

d. 8 78

+ 9 48

= e. 2 110

+ 7 610

= f. 1 13

+ 1 23

=

g. 5 14

+ 3 14

= h. 6 37

+ 6 27

= i. 2 1215

+ 4 215

=

j. 14 1025

+ 7 725

= k. 20 62100

+ 20 31100

= l. 8 56

+ 3 56

=

Write a mixed number equation for this problem and solve it. Write the answer in a complete sentence.

m. Brenda used 2 24 cups of sugar for cookies. She used another

1 14 cups for tea. How many cups of sugar did Brenda use?

55

Name __________________________________ Date ___________________


Adding Mixed NumbersExample: Add 4 1

3+ 1 1

6.

Step 1: Change to like fractions. 4 13

= 4 26

Step 2: Add. 4 26

+ 1 16

= 5 36

or 5 12

a. 2 12

+ 2 14

= b. 6 35

+ 1 815

= c. 9 23

+ 10 512

=

d. 50 920

+ 20 14

= e. 11 56

+ 4 23

= f. 4 1215

+ 4 25

=

g. 9 1425

+ 23100

= h. 20 + 20 715

= i. 1 34

+ 3 16

=


j. On Saturday, Mark spent 4 34 hours cleaning the garage.

Then he cleaned the basement for another 2 23 hours.

How many hours did Mark clean on Saturday?

Name __________________________________ Date ___________________

56


Subtracting Mixed NumbersExample: Subtract 41

4– 1 3

4.

Step 1: Step 2: Step 3:Regroup if needed. Subtract fractions. Subtract whole numbers.

4 14

= 3 4 + 4

1 = 354

3 54

3 54

– 1 34

– 1 34

24

2 24

or 2 12

a. 4 34

– 4 14

= b. 5 45

– 3 25

= c. 7 512

– 4 712

=

d. 9 38

– 2 58

= e. 1 110

– 710

= f. 8 13

– 6 23

=

g. 14 34

– 10 38

= h. 5 – 2 12

= i. 356

– 2 13

=

j. 7 27

– 6 114

= k. 18 12

– 15 14

= l. 3 2425

– 3 4350

=

57

Name __________________________________ Date ___________________


Subtracting Mixed NumbersExample: Subtract 4 1

4– 1 3

4.

Step 1: Change the mixed Step 2: Subtract fractions. Reducenumbers to improper fractions. the answer to lowest terms.

4 14

= (4 � 4)4

+ 1 = 174

174

– 74

= 104

= 2 24

= 2 12

1 34

= (4 � 1)4

+ 3 = 74

a. 4 34

– 4 14

= b. 5 45

– 3 25

= c. 7 512

– 4 712

=

d. 14 34

– 10 38

= e. 5 – 2 12

= f. 356

– 2 13

=


g. Boyd brought in 12 13 pounds of pop cans to recycle.

Ella brought in 14 12 pounds of pop cans.

How much more did Ella bring in than Boyd?

Name __________________________________ Date ___________________

58


AAnnsswweerrssAAddddiinngg WWhhoollee NNuummbbeerrss Page 3: a. 11; b. 66; c. 55; d. 55; e. 55; f. 22; g. 22; h. 55; i. 33; j. 88; k. 55; l. 44; m. 88; n. 66; o. 88; p. 99; q. 99; r. 99; s. 66; t. 88

Page 4: a. 88; b. 77; c. 44; d. 88; e. 99; f. 00; g. 77; h. 77; i. 99; j. 33 ++ 11 == 44,,CCaalleebb wweenntt ttoo tthhee pprriinncciippaall’’ss ooffffiiccee 44 ttiimmeess..;; k. 44 ++ 55 == 99.. AAuuttuummnnppuutt 99 mmaarrbblleess iinn tthhee jjaarr..

RReeggrroouuppiinngg PPoowweerr:: AAddddiittiioonn Page 5: a. 1100; b. 1155; c. 1166; d. 1100; e. 1100; f. 1100; g. 1133; h. 1133; i. 1100; j. 1122; k. 1177; l. 1144; m. 1188; n. 1155; o. 1144; p. 1122; q. 1100; r. 1111; s. 1111; t. 1133

Page 6: a. 1155; b. 1133; c. 1122; d. 1144; e. 1100; f. 1144; g. 1122; h. 1111; i. 1100; j. 66 ++ 44 == 1100.. JJeessssiiccaa wwoorrkkeedd 1100 hhoouurrss..; k. 77 ++ 77 == 1144.. TThheeyy ccaauugghhtt1144 ffiisshh ttooggeetthheerr.

AAddddiinngg LLaarrggeerr NNuummbbeerrssPage 7: a. 5588; b. 7788; c. 9999; d. 5511; e. 7788; f. 1166; g. 7799; h. 9999; i. 8844; j. 6699;k. 2299; l. 3377; m. 993388; n. 880088; o. 115599; p. 888877

Page 8: a. 334455; b. 666699; c. 669955; d. 330077; e. 33,,993355; f. 77,,776622; g. 88,,992277; h. 77,,336699; i. 112266 ++ 331133 == 443399.. TThheeyy rreeaadd 443399 bbooookkss aallll ttooggeetthheerr..; j. 3322 ++ 77 == 3399.. TThheeyy hhaadd 3399 ppooiinnttss..

MMuullttii--DDiiggiitt RReeggrroouuppiinngg:: AAddddiittiioonnPage 9: a. 6622; b. 9911; c. 7700; d. 3300; e. 2222; f. 6633; g. 6633; h. 110011; i. 445511; j. 220066; k. 556622; l. 11,,115511; m. 11,,001111; n. 55,,000088; o. 77,,006633; p. 1133,,440099

Page 10: a. 110000; b. 336622; c. 669933; d. 995522; e. 881199; f. 11,,446622; g. 88,,991111; h. 1144,,889944; i. 336655 ++ 336655 == 773300.. TThheerree aarree 773300 ddaayyss iinn ttwwoo yyeeaarrss..; j. 8833 ++ 5599 == 114422.. MMaaddeelliinnee ssoolldd 114422 ccaannddyy bbaarrss iinn ttwwoo wweeeekkss..

AAddddiittiioonn PPrrooppeerrttiieessPage 11: a. 77,, 77; b. 88,, 88; c. 1177,, 1177; d. 5588,, 5588; e. 7700,, 7700; f. 1100,, 1100; g. 1133,, 1133; h. 3366,, 3366; i. 1188,, 1188

59


Page 12: a. 66; b. 88; c. 1122; d. 2233; e. 5522; f. 441155; g. 99; h. 44; i. 3377; j. 992277;k. CCoommmmuuttaattiivvee pprrooppeerrttyy; l. ZZeerroo pprrooppeerrttyy;; m. AAssssoocciiaattiivvee pprrooppeerrttyy

SSuubbttrraaccttiinngg WWhhoollee NNuummbbeerrss Page 13: a. 11; b. 66; c. 44; d. 22; e. 00; f. 55; g. 33; h. 11; i. 33; j. 33; k. 22; l. 00; m. 11; n. 00; o. 00; p. 77; q. 22; r. 22; s. 55; t. 44

Page 14: a. 88; b. 00; c. 88; d. 11; e. 22; f. 00; g. 44; h. 66; i. 44; j. 77 ––33 == 44..SShhaawwnnaa hhaass 44 bblluuee ppeenncciillss..; k. 99 –– 00 == 99.. 99 kkiitttteennss aarree nnoott wwhhiittee..

IInnvveerrssee OOppeerraattiioonnssPage 15: a. 66 ++ 11 == 77,, 11 ++ 66 == 77,, 77 –– 11 == 66,, 77 –– 66 == 11; b. 00 ++ 55 == 55,, 55 ++ 00 == 55,, 55 –– 55 == 00,, 55 –– 00 == 55; c. 22 ++ 33 == 55,, 33 ++ 22 == 55,, 55 –– 33 == 22,, 55 –– 22 == 33; d. 22 ++ 55 == 77,, 55 ++ 22 == 77,, 77 –– 55 == 22,, 77 –– 22 == 55

Page 16: a. 77 –– 00 == 77,, 77 ++ 00 == 77; b. 99 –– 88 == 11,, 11 ++ 88 == 99; c. 66 –– 44 == 22,, 22 ++ 44 == 66; d. 33 ++ 44 == 77,, 77 –– 44 == 33; e. 99 –– 33 == 66,, 66 ++ 33 == 99; f. 55 ++ 11 == 66,,66 –– 11 == 55; Reasons: Possible answers TToo ccoommppaarree aammoouunnttss,, ttoocchheecckk aaddddiittiioonn,, ttoo ffiinndd aa ddiiffffeerreennccee,, ttoo sseeee wwhhaatt yyoouu hhaavvee lleefftt..

SSuubbttrraaccttiinngg LLaarrggeerr NNuummbbeerrss Page 17: a. 2255; b. 2244; c. 5500; d. 3322; e. 1111; f. 1111; g. 3311; h. 3377; i. 5511; j. 11; k.1100; l. 1166; m. 440055; n. 224411; o. 885511; p. 1111

Page 18: a. 440099; b. 770011; c. 223300; d. 550044; e. 55,,110011; f. 88,,440011; g. 44,,116633; h. 11,,669922; i. 662277 –– 551155 == 111122.. BBeenn ssccoorreedd 111122 ppooiinnttss mmoorree tthhaann WWiillll..; j. 993388 –– 991122 == 2266.. MMaarrccii nneeeeddss $$2266 mmoorree ttoo bbuuyy aa nneeww ccoommppuutteerr..

RReeggrroouuppiinngg PPoowweerr:: SSuubbttrraaccttiioonn Page 19: a. 1144; b. 99; c. 1122; d. 7788; e. 88; f. 1188; g. 4477; h. 77; i. 22; j. 99; k. 1166; l. 3355; m. 1133; n. 5599; o. 77; p. 4499

Page 20: a. 88; b. 2277; c. 2255; d. 88; e. 4444; f. 7788; g. 77; h. 2299; i. 1100; j. 5566 –– 4477 == 99.. MMiicchheellllee iiss 99 iinncchheess ttaalllleerr tthhaann KKaarraa..; k. 4411 –– 2255 == 1166.. FFrraanncciinnee hhaass $$1166 lleefftt..

60


MMuullttii--DDiiggiitt RReeggrroouuppiinngg:: SSuubbttrraaccttiioonn Page 21: a. 222255; b. 118899; c. 448855; d. 339944; e. 114477; f. 332200; g. 119988; h. 666644; i. 11,,996633; j. 22,,880099; k. 66,,337799; l. 22,,009955

Page 22: a. 11,,337788; b. 1177,,778800; c. 1199,,559922; d. 66,,009999; e. 1122,,773344; f. 774411,,004466;g. 22,,550000 –– 11,,776688 == 773322.. TThheerree wweerree 773322 sseerrvviinnggss lleefftt..; h. 88,,994433 –– 88,,669966 == 224477.. TThheerree wweerree 224477 mmoorree rreessttaauurraannttss..

MMeennttaall MMaatthh PPoowweerr:: AAddddiittiioonn Page 23: a. 3388; b. 3377; c. 4433; d. 4422; e. 2244; f. 2233; g. 9955; h. 110044; i. 7766; j. 6655; k. 111111; l. 4400; m. 446655; n. 446644; o. 992211; p. 992200; q. 663366; r. 663355; s. 774411; t. 553366; u. 442288; v. 884444

Page 24: a. 2200; b. 1166; c. 1188; d. 2233; e. 5500; f. 444466; g. 556688; h. 44,,000000; i. 6644; j. 110000; k. 117755; l. 11,,660000; m. 995533; n. 44,,442200

MMeennttaall MMaatthh PPoowweerr:: SSuubbttrraaccttiioonn Page 25: a. 3333; b. 3344; c. 4466; d. 4477; e. 1144; f. 1155; g. 1100; h. 1166; i. 110099; j. 7733;k. 5522; l. 8811; m. 335511; n. 335522; o. 776677; p. 776688; q. 2244; r. 2255; s. 880099; t. 331177;;u. 115599; v. 660011

Page 26: a. 5522; b. 337755; c. 5544; d. 2233; e. 440000; f. 559999; g. 113322; h. 00; i. 5555; j. 3300; k. 2255; l. 442200; m. 66,,226644; n. 2277

EEssttiimmaattiioonn PPoowweerr:: AAddddiittiioonn Page 27: a. AAbboouutt 8800; b. AAbboouutt 3300; c. AAbboouutt 114400; d. AAbboouutt 220000; e. AAbboouutt 115500; f. AAbboouutt 5500; g. AAbboouutt 440000; h. AAbboouutt 11,,000000; i. AAbboouutt880000; j. AAbboouutt 665500; k. AAbboouutt 11,,880000; l. AAbboouutt 555500; m. AAbboouutt115500,,000000; n. AAbboouutt 9900,,000000; o. AAbboouutt 55,,990000

Page 28: a. AAbboouutt 4400; b. AAbboouutt 9900; c. AAbboouutt 330000; d. AAbboouutt 88,,000000;e. AAbboouutt 88,,000000; f. AAbboouutt 110000,,000000; g. 662233 ++ 336644 iiss aabboouutt 11,,000000mmiilleess..; h. 5522 ++ 115533 iiss aabboouutt 220000 ddaannccee ccllaasssseess..

EEssttiimmaattiioonn PPoowweerr:: SSuubbttrraaccttiioonnPage 29: a. AAbboouutt 7700; b. AAbboouutt 550000; c. AAbboouutt 440000; d. AAbboouutt 8800; e. AAbboouutt 442200; f. AAbboouutt 3300; g. AAbboouutt 33,,000000; h. AAbboouutt 770000; i. AAbboouutt8800; j. AAbboouutt 4400; k. AAbboouutt 110000; l. AAbboouutt 00; m. AAbboouutt 3300; n. AAbboouutt110000; o. AAbboouutt 22,,000000

61


Page 30: a. AAbboouutt 220000; b. AAbboouutt 115500; c. AAbboouutt 550000; d. 330000; e. 337700; f. 336699; g. tteennss ppllaaccee; h. 44,,000000; i. 55,,000000; j. 44,,995544; k. tthhee hhuunnddrreeddss ppllaaccee

WWoorrdd PPrroobblleemm PPoowweerr:: AAddddiittiioonn Page 31: a. 2244 ppiieecceess ooff ffrruuiitt; b. 4400 ggaalllloonnss; c. $$228811; d. 88,,440088 ppeeooppllee; e. 220000 oouunncceess

Page 32: a. 11,,884400 mmiilleess; b. 66,,881100 mmeetteerrss; c. 5555 aanniimmaallss; d. AAbboouutt11,,990000 ttuulliipp bbuullbbss; e. AAbboouutt 4400,,000000 vveehhiicclleess

WWoorrdd PPrroobblleemm PPoowweerr:: SSuubbttrraaccttiioonn Page 33: a. 1144 ccrraacckkeerrss; b. 3377 rroosseess; c. $$3311; d. 335588 mmoorree ssttuuddeennttss;e. 8888 mmoorree oouunncceess

Page 34: a. 221144 kkiilloommeetteerrss; b. 4466 ssttuuddeennttss; c. AAbboouutt 112200,,000000 mmoorreemmiilleess; d. AAbboouutt $$222200; e. AAbboouutt 2200,,000000 mmoorree vveehhiicclleess

AAddddiinngg TTiimmeePage 35: a. 77 hhoouurrss 2255 mmiinnuutteess; b. 2211 hhoouurrss 4444 mmiinnuutteess; c. 1122 hhoouurrss 4499 mmiinnuutteess; d. 1133 hhoouurrss 5588 mmiinnuutteess; e. 4411 mmiinnuutteess 4499 sseeccoonnddss; f. 5544 mmiinnuutteess 5588 sseeccoonnddss; g. 33 wweeeekkss 44 ddaayyss; h. 3388 yyeeaarrss 1111 mmoonntthhss; i. HHaarroolldd ssppeenntt 33 hhoouurrss3322 mmiinnuutteess oonn bbootthh ssuubbjjeeccttss ccoommbbiinneedd..

Page 36: a. 99 wweeeekkss 22 ddaayyss; b. 2222 wweeeekkss 11 ddaayy; c. 1166 hhoouurrss 1155 mmiinnuutteess; d. 2222 hhoouurrss 3300 mmiinnuutteess; e. 4422 ddaayyss 55 hhoouurrss;f. 5555 mmiinnuutteess; g. 44 hhoouurrss 66 mmiinnuutteess; h. 3322 yyeeaarrss 22 mmoonntthhss; i. BBeelliinnddaa lliivveedd iinn aappaarrttmmeennttss ffoorr 44 yyeeaarrss aanndd 77 mmoonntthhss..

SSuubbttrraaccttiinngg TTiimmeePage 37: a. 66 mmiinnuutteess 5566 sseeccoonnddss; b. 4477 sseeccoonnddss; c. 3311 mmiinnuutteess 5566sseeccoonnddss; d. 33 mmiinnuutteess 4411 sseeccoonnddss; e. 11 hhoouurr 5588 mmiinnuutteess; f. 66 hhoouurrss4422 mmiinnuutteess; g. 44 wweeeekkss 55 ddaayyss; h. 1100 mmoonntthhss; i. TThhee kkiitttteennss wweerree 55wweeeekkss aanndd 66 ddaayyss oolldd..

Page 38: a. 11 hhoouurr 2255 mmiinnuutteess; b. 11 hhoouurr 3300 mmiinnuutteess; c. 3377 sseeccoonnddss;d. 22 wweeeekkss 33 ddaayyss; e. 1177 mmiinnuutteess; f. 33 hhoouurrss 4444 mmiinnuutteess

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AAddddiinngg DDeecciimmaallss Page 39: a. 66..77; b. 44..99; c. 00..44; d. 99..88; e. 00..5533; f. 22..0088; g. 99..11; h. 1155..44; i.77..559944; j. 1122..11; k. 3366..0033; l. 1100..880022; m. 33..883355; n. 1166..2255; o. 2200..1166; p. 6622..2244;q. 44..224444

Page 40: a. 2299..9955; b. 11..2266; c. 1166..0066; d. 00..1122; e. 99..6611; f. 1111; g. 1188..8888; h. 00..002222; i. 334477..3322; j. 1100..22 lliitteerrss; k. 44..5566 kkiilloommeetteerrss; l. 1166..0055 cceennttiimmeetteerrss

SSuubbttrraaccttiinngg DDeecciimmaallss Page 41: a. 55..33; b. 00..9933; c. 22..7777; d. 1155..55; e. 22..2277; f. 8800..6666; g. 66..9966;

h. 44..7733; i. 33..6633; j. 2288..5588; k. 6666..7799; l. 4499..99; m. 00..9922; n. 1133..88;

o. 1111..4411; p. 00..0022; q. 00..229933

Page 42: a. 22..4455; b. 4433..1122; c. 1133..9999; d. 22..5511; e. 00..2266; f. 11..4433;

g. 11..7777; h. 11..22; i. 2266..66; j. 00..5555 sseeccoonnddss; k. 33..2255 ccmm; l. 11..77°°FF

AAddddiinngg MMoonneeyy Page 43: a. $$33..7755; b. $$1111..5500; c. $$33..4455; d. $$1166..9900; e. $$1155..7755;

f. $$99..2222; g. $$11..0033; h. $$2222..4400; i. $$6655..7766

Page 44: a. $$3366..2200; b. $$2255..9988; c. $$00..6600; d. $$88..0000; e. $$3311..9977;

f. $$5533..3322; g. $$33..5555; h. $$66..3311; i. $$4411..5522; j. $$3300..1166

SSuubbttrraaccttiinngg MMoonneeyy Page 45: a. $$88..3311; b. $$77..1166; c. $$55..8899; d. $$33..7766; e. $$11..0000; f. $$00..4444;

g. $$88..7799; h. $$77..7722; i. $$00..8899; j. $$2277..7744; k. $$1177..5599; l. $$66..1100;

m. $$00..2255; n. $$7722..3377; o. $$2244..4499; p. $$5555..0000; q. $$1144..4488

Page 46: a. $$55..8800; b. $$44..3322; c. $$1100..6688; d. $$6677..5500; e. $$2255..0000;

f. $$33..5533; g. $$00..7777; h. $$77..6611; i. $$88..1155; j. $$55..7788; k. $$11..8844; l. $$33..2222

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AAddddiinngg IInntteeggeerrss Page 47: a. ––66; b. ++1100; c. ––2222; d. ––1199; e. ––3344; f. ++99; g. ++9977; h. ––110088; i. ++77; j. ––1155; k. ––1133; l. ++1100; m. ++1133; n. ––1122; o. ––1100; p. ––33 ++ ––33 == ––66..MMiicchhaaeell oowweess hhiiss mmootthheerr $$66..

Page 48: a. ––44; b. ++44; c. ++44; d. ––99; e. ++99; f. ––77; g. ++1111; h. ––11; i. ––33; j. ++1100; k. ––77; l. ++33; m. ––1100; n. ––3322; o. ––33; p. ––66 ++ ++44 == ––22.. MMiicchhaaeelloowweess hhiiss mmootthheerr $$22..

SSuubbttrraaccttiinngg IInntteeggeerrss Page 49: a. ––88; b. ++1100; c. ––1122; d. ––2211; e. ++1133; f. ++2211; g. ––2211; h. ++99; i. ––1155;j. ––3300; k. ––3355; l. ––1133; m. ––7700; n. ++9988; o. ––33; p. ++2200 –– ––1166 == ++3366.. TThheeddiiffffeerreennccee iinn aallttiittuuddee iiss 3366 ffeeeett..

Page 50: a. ––22; b. ++22; c. ––66; d. ++11; e. ––88; f. ++55; g. ++1133; h. ++5544; i. ++11; j. ––77; k. ––11; l. ++66; m. ++1133; n. ++66; o. ––22; p. ++33 –– ++66 == ––33.. TThhee ddiiffffeerreenncceeiinn tteemmppeerraattuurree wwaass 33°°FF.. ; q. ––1100 –– ––3322 == ++2222.. TThhee ddiiffffeerreennccee iinn aallttiittuuddee iiss 2222 ffeeeett..

AAddddiinngg FFrraaccttiioonnss

Page 51: a. 33//44; b. 55//66; c. 55//88; d. 44//55; e. 77//1122; f. 55//99; g. 77//1100;

h. 22//22 oorr 11; i. 1133//1144; j. 66//77; k. 33//44; l. 66//88 oorr 33//44; m. 33//55 ++ 11//55 == 44//55..44//55 ooff tthhee hhoouusseess aarree ppaaiinntteedd wwhhiittee oorr yyeellllooww..

Page 52: a. 33//66 oorr 11//22; b. 77//99; c. 55//1100 oorr 11//22; d. 1100//1122 oorr 55//66;

e. 99//1122 oorr 33//44; f. 1111//1122; g. 9977//110000; h. 77//1166; i. 44//66 oorr 22//33;

j. 11//22 ++ 11//33 == 55//66.. NNaannccyy ddiidd 55//66 ooff hheerr hhoommeewwoorrkk bbeeffoorree sshhee wweenntthhoommee..

SSuubbttrraaccttiinngg FFrraaccttiioonnss

Page 53: a. 11//44; b. 33//1100; c. 44//77; d. 11//1144; e. 33//1122 oorr 11//44; f. 11//99;

g. 22//1122 oorr 11//66; h. 55//2200 oorr 11//44; i. 1133//3322; j. 22//77; k. 3377//110000; l. 44//1111;

m. 33//88 –– 22//88 == 11//88.. 11//88 ooff tthhee ppiizzzzaa iiss lleefftt..

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Page 54: a. 11//1100; b. 11//44; c. 11//88; d. 22//66 oorr 11//33; e. 55//99; f. 11//66; g. 77//110000;

h. 33//1122 oorr 11//44; i. 33//1166; j. 11//33 –– 11//44 == 11//1122.. 11//1122 ooff tthhee hhoouussee wwaass lleefftt ttooppaaiinntt..

AAddddiinngg MMiixxeedd NNuummbbeerrss

Page 55: a. 77 33//44; b. 1133 44//55; c. 2222 1111//1122; d. 1188 33//88; e. 99 77//1100; f. 33;

g. 88 22//44 oorr 88 11//22; h. 1122 55//77; i. 66 1144//1155; j. 2211 1177//2255; k. 4400 9933//110000;

l. 112244//66 oorr 1122 22//33; m. 2222//44 ++ 11 11//44 == 3333//44.. BBrreennddaa uusseedd 3333//44 ccuuppss ooffssuuggaarr..

Page 56: a. 44 33//44; b. 88 22//1155; c. 2200 11//1122; d. 7700 1144//2200 oorr 770077//1100;

e. 1166 33//66 oorr 1166 11//22; f. 9933//1155 oorr 9911//55; g. 99 7799//110000; h. 4400 77//1155; i. 441111//1122;

j. 4433//44 ++ 2222//33 == 7755//1122.. MMaarrkk ssppeenntt 77 55//1122 hhoouurrss cclleeaanniinngg oonn SSaattuurrddaayy..

SSuubbttrraaccttiinngg MMiixxeedd NNuummbbeerrss Page 57: a. 22//44 oorr 11//22; b. 2222//55; c. 221100//1122 oorr 2255//66; d. 6666//88 oorr 6633//44; e. 44//1100 oorr 22//55; f. 1122//33; g. 4433//88; h. 2211//22; i. 11 33//66 oorr 1111//22; j. 1133//1144; k. 3311//44; l.55//5500 oorr 11//1100

Page 58: a. 22//44 oorr 11//22; b. 1122//55 oorr 2222//55; c. 3344//1122 oorr 221100//1122 oorr 2255//66; d. 3355//88 oorr 4433//88; e. 55//22 oorr 2211//22; f. 99//66 oorr 1133//66 oorr 1111//22 ; g. 114411//22 –– 112211//33 == 2211//66.. EEllllaa bbrroouugghhtt iinn 2211//66 ppoouunnddss mmoorree tthhaann BBooyydd..

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Subtraction and Addition 2