Embed Size (px)
Citation preview
© H
ough
ton
Miff
lin H
arco
urt
Pub
lishi
ng C
ompa
ny
Name
Write the partners and the total.
2-1
1. ■ + ■
Total ■ 3. ■ + ■
Total ■ 5. ■ + ■
Total ■ 7. ■ + ■
Total ■
2. ■ + ■
Total ■ 4. ■ + ■
Total ■ 6. ■ + ■
Total ■ 8. ■ + ■
Total ■UNIT 2 LESSON 1 Represent Addition 19
0 1 2 3 4 5 6 7 8 9 10
5-train
++++
■■■
© H
oughton Mifflin H
arcourt Publishing C
ompany
Name2-1
1. Write the numbers from 0–10.
2. Write how many dots. See the 5 in each group.
Write how many leaves. See the 5 in each row.
3.
4.
5.
6. Write the 5-partners as a train.
7. Stretch Your Thinking Write partners of 7. Draw a Break-Apart Stick to show the partners. Write the total.
■ + ■
Total ■
■ ■ ■ ■ ■
20 UNIT 2 LESSON 1 Represent Addition
© H
ough
ton
Miff
lin H
arco
urt
Pub
lishi
ng C
ompa
ny
Name2-2
Write the partners and total for each circle drawing.
1. ■ + ■
Total ■ 3. ■ + ■
Total ■ 5. ■ + ■
Total ■ 7. ■ + ■
Total ■
2. ■ + ■
Total ■ 4. ■ + ■
Total ■ 6. ■ + ■
Total ■ 8. ■ + ■
Total ■UNIT 2 LESSON 2 Addition with Circle Drawings 21
6-train
+ + + + +
© H
oughton Mifflin H
arcourt Publishing C
ompany
Name2-2
1. Write how many dots. See the 5 in each group.
Write how many of each food. See the 5 in each row.
2.
3.
4.
5. Write the 6-partners as a train.
6. Stretch Your Thinking Make a circle drawing to show a set of partners of 10.
22 UNIT 2 LESSON 2 Addition with Circle Drawings
© H
ough
ton
Miff
lin H
arco
urt
Pub
lishi
ng C
ompa
ny
Name
Write the partners and the total. Then write the equation.
2-3
1. ■ + ■ Equation
Total ■2. ■ + ■
Equation
Total ■3. ■ + ■
Equation
Total ■4. ■ + ■
Equation
Total ■UNIT 2 LESSON 3 Addition Equations 23
7-train + + +
+++
0 4 7
and
and
and
+ +
+
+
+
+
© H
oughton Mifflin H
arcourt Publishing C
ompany
Name2-3
1. Fill in the numbers from 0–10.
Show the 7-partners and switch the partners.
2.
3.
4.
5. Write the partners and the switched partners.
6. Stretch Your Thinking Make a circle drawing to match the picture. Then write the equation.
Equation
24 UNIT 2 LESSON 3 Addition Equations
© H
ough
ton
Miff
lin H
arco
urt
Pub
lishi
ng C
ompa
ny
Name
Write the partners and the total. Then write the equation.
2-4
1. ■ + ■ Equation
Total ■2. ■ + ■
Equation
Total ■3. ■ + ■
Equation
Total ■4. ■ + ■
Equation
Total ■UNIT 2 LESSON 4 Addition Equations and Stories 25
8-train + + + +
++++
and
and
and
and
+ +
+
+
+
+
+
+
© H
oughton Mifflin H
arcourt Publishing C
ompany
Name2-4
Write how many of each food. See the 5 in each row.
1.
2.
3.
Show the 8-partners and switch the partners.
4.
5.
6.
7.
8. Write the partners and the switched partners.
9. Stretch Your Thinking Write an equation to match the circle drawing.
Equation
26 UNIT 2 LESSON 4 Addition Equations and Stories
5
3
4
2
5
6
7
6
5
4
8
3
© H
ough
ton
Miff
lin H
arco
urt
Pub
lishi
ng C
ompa
ny
Name2-5
Count on. Write the total.
1. Total
= ■
3. Total
= ■
5. Total
= ■
7. Total
= ■
9. Total
= ■
11. Total
= ■
2. Total
= ■
4. Total
= ■
6. Total
= ■
8. Total
= ■
10. Total
= ■
12. Total
= ■
UNIT 2 LESSON 5 Explore Solution Methods 27
+ +
+
+
+
+
+
+
and
and
and
and
9-train +
+
+ + +
+++
© H
oughton Mifflin H
arcourt Publishing C
ompany
Name2-5
Show the 9-partners and switch the partners.
1.
2.
3.
4.
5. Write the partners and the switched partners.
Use patterns to solve.
6. 0 + 9 = ■ 6 + 0 = ■ 0 + 7 = ■ 7. 8 - 0 = ■ 2 - 0 = ■ 10 - 0 = ■ 8. 1 + 4 = ■ 9 + 1 = ■ 5 + 1 = ■ 9. Stretch Your Thinking Count on to find
the total. 7 + 2 = ■ Now count all. Did you get the same answer? Explain. 28 UNIT 2 LESSON 5 Explore Solution Methods
© H
ough
ton
Miff
lin H
arco
urt
Pub
lishi
ng C
ompa
ny
Name2-6
Count on to find the total.
1. 6 + 3 = ■4. 5 + 5 = ■7. 4 + 3 = ■
2. 3 + 5 = ■5. 4 + 6 = ■8. 7 + 2 = ■
3. 4 + 5 = ■6. 2 + 4 = ■9. 6 + 2 = ■
Find the total number of toys.
10. 7 horns in the box
Total
12. 3 balls in the box
Total
11. 5 bears in the box
Total
13. 8 train cars in the box
Total
■ ■
■ ■
UNIT 2 LESSON 6 Addition Strategies: Counting On 29
1 4 6 7
and
and
and
and
and
+
+
+
+
+ +
+
+
+
+
© H
oughton Mifflin H
arcourt Publishing C
ompany
Name2-6
1. Fill in the numbers from 0–10.
Show the 10-partners and switch the partners.
2.
3.
4.
5.
6.
7. Stretch Your Thinking Count on with dots to find the total. Write the total.
6 + 3 = ■
30 UNIT 2 LESSON 6 Addition Strategies: Counting On
© H
ough
ton
Miff
lin H
arco
urt
Pub
lishi
ng C
ompa
ny
Name2-7
Underline the greater number. Count on from that number.
1.3 + 6 = ■
3.2 + 8 = ■
5.4 + 5 = ■
7. 2 + 7 = ■
9.4 + 3 = ■
11.8 + 2 = ■
2.2 + 5 = ■
4.7 + 3 = ■
6.3 + 5 = ■
8.6 + 4 = ■
10.2 + 6 = ■
12.6 + 3 = ■
UNIT 2 LESSON 7 Count On from the Greater Number 31
© H
oughton Mifflin H
arcourt Publishing C
ompany
Name2-7
Write the partners and the total.
1. ■ + ■
Total ■
2. ■ + ■
Total ■
3. ■ + ■
Total ■
4. ■ + ■
Total ■
Use patterns to solve.
5. 8 - 1 = ■ 4 - 1 = ■ 10 - 1 = ■ 6. 0 + 5 = ■ 0 + 9 = ■ 7 + 0 = ■ 7. 10 - 0 = ■ 5 - 0 = ■ 6 - 0 = ■ 8. Stretch Your Thinking Sami counts on to solve
this problem. 2 + 8 = ■ Sami counts 8, 9 and says the total is 9. What did
she do wrong?
32 UNIT 2 LESSON 7 Count On from the Greater Number
© H
ough
ton
Miff
lin H
arco
urt
Pub
lishi
ng C
ompa
ny
Name2-8
Underline the greater number.Count on from that number.
1.2 + 7 = ■
3.3 + 4 = ■
5.4 + 5 = ■
7.2 + 4 = ■
9.8 + 2 = ■
11.3 + 6 = ■
13.2 + 8 = ■
2.1 + 9 = ■
4.6 + 3 = ■
6.3 + 7 = ■
8.5 + 3 = ■
10.5 + 2 = ■
12.6 + 2 = ■
14.7 + 3 = ■
UNIT 2 LESSON 8 Addition Game: Unknown Totals 33
© H
oughton Mifflin H
arcourt Publishing C
ompany
Name2-8
Write the partners and the total.
1. ■ + ■
Total ■
2. ■ + ■
Total ■
3. ■ + ■
Total ■
4. ■ + ■
Total ■
Write the partners and total for each circle drawing.
5. ■ + ■
Total ■
6. ■ + ■
Total ■
7. Stretch Your Thinking Ring the greater number and count on from that number.
Write the total.
4 + 5 = ■34 UNIT 2 LESSON 8 Addition Game: Unknown Totals
© H
ough
ton
Miff
lin H
arco
urt
Pub
lishi
ng C
ompa
ny
Name2-9
Underline the greater number.Count on from that number.
1. 4 + 5 = ■
3. 3 + 5 = ■
5. 2 + 8 = ■
7. 4 + 3 = ■
9. 8 + 2 = ■
11. 3 + 7 = ■
13. 2 + 7 = ■
2. 6 + 3 = ■
4. 2 + 3 = ■
6. 4 + 2 = ■
8. 7 + 3 = ■
10. 6 + 2 = ■
12. 5 + 2 = ■
14. 7 + 2 = ■
UNIT 2 LESSON 9 Practice Counting On 35
© H
oughton Mifflin H
arcourt Publishing C
ompany
Name2-9
Write the partners and total for each circle drawing.
1. ■ + ■
Total ■
2. ■ + ■
Total ■
3. ■ + ■
Total ■
4. ■ + ■
Total ■
Write the partners and the total. Then write the equation.
5. ■ + ■
Total ■
Equation
6. Stretch Your Thinking Write an addition equation. Draw dots to count on to solve it.
36 UNIT 2 LESSON 9 Practice Counting On
© H
ough
ton
Miff
lin H
arco
urt
Pub
lishi
ng C
ompa
ny
Name2-10
Solve. Write how many are left.
1. There are 7 boats.
7 - 4 = ■ Then 4 sail away.
2. There are 10 candles.
10 - 7 = ■ Then 7 go out.
3. There are 8 muffins.
8 - 6 = ■ Then 6 are eaten.
4. There are 9 fish.
9 - 5 = ■ Then 5 swim away.
5. There are 6 elephants.
6 - 4 = ■ Then 4 go away.
UNIT 2 LESSON 10 Represent Subtraction 37
© H
oughton Mifflin H
arcourt Publishing C
ompany
Name2-10
Write the partners and the total. Then write the equation.
1. ■ + ■
Total ■
Equation
2. ■ + ■
Total ■
Equation
3. ■ + ■
Total ■
Equation
4. Stretch Your Thinking Write an equation for this story problem. There are 8 ants. Then 2 crawl away.
Equation
38 UNIT 2 LESSON 10 Represent Subtraction
© H
ough
ton
Miff
lin H
arco
urt
Pub
lishi
ng C
ompa
ny
Name2-11
Subtract and write the equation.
1. Equation
Subtract 3
2. Equation
Subtract 5
3. Equation
Subtract 3
4. Equation
Subtract 4
5. Equation
Subtract 4
6. Equation Subtract 6
UNIT 2 LESSON 11 Subtraction with Drawings and Equations 39
5 7
3 6
© H
oughton Mifflin H
arcourt Publishing C
ompany
Name2-11
Write the partners and the total. Then write the equation.
1. ■ + ■
Total ■
Equation
2. ■ + ■
Total ■
Equation
Count on. Write the total.
3. Total
= ■
4. Total
= ■
5. Total
= ■
6. Total
= ■
7. Stretch Your Thinking Make a circle drawing. Then write the equation to solve. There are 6 butterflies. 4 fly away. How many are left?
Equation
40 UNIT 2 LESSON 11 Subtraction with Drawings and Equations
© H
ough
ton
Miff
lin H
arco
urt
Pub
lishi
ng C
ompa
ny
Name2-12
Use the picture to solve the equation.
1.
10 - 7 = ■3.
9 - 6 = ■5.
5 - 3 = ■7.
7 - 4 = ■9.
6 - 4 = ■11.
10 - 8 = ■
2.
7 - 2 = ■4.
8 - 4 = ■6.
6 - 2 = ■8.
9 - 4 = ■10.
8 - 5 = ■12.
7 - 7 = ■
UNIT 2 LESSON 12 Practice with Subtraction 41
3 5
2 4
© H
oughton Mifflin H
arcourt Publishing C
ompany
Name2-12
Count on. Write the total.
1. Total
= ■
2. Total
= ■
3. Total
= ■
4. Total
= ■
Find the total number of toys.
5. 8 horns in the box
■ Total
6. 7 train cars in the box
■ Total
7. Stretch Your Thinking Make a circle drawing to show subtraction. Then write the equation.
Equation
42 UNIT 2 LESSON 12 Practice with Subtraction
© H
ough
ton
Miff
lin H
arco
urt
Pub
lishi
ng C
ompa
ny
Name2-13
Use the circles to solve the equation.
1.
9 - 5 = ■3.
10 - 8 = ■5.
6 - 3 = ■7.
7 - 3 = ■
9. 6 - 4 = ■11. 10 - 2 = ■
13. 9 - 7 = ■
2.
6 - 2 = ■4.
8 - 5 = ■6.
5 - 2 = ■8.
9 - 6 = ■
10. 8 - 6 = ■12. 7 - 1 = ■
14. 8 - 4 = ■
Solve the equation.
UNIT 2 LESSON 13 Generate Subtraction Problems 43
© H
oughton Mifflin H
arcourt Publishing C
ompany
Name2-13
Find the total number of toys.
1. 4 balls in the box
■ Total
2. 6 bears in the box
■ Total
Underline the greater number. Count on from that number.
3. 6 + 3 = ■ 4. 2 + 5 = ■
5. 2 + 6 = ■ 6. 7 + 2 = ■
7. 3 + 7 = ■ 8. 3 + 5 = ■
9. Stretch Your Thinking Use a circle drawing to solve this equation. Show your work.
8 - 5 = 3
44 UNIT 2 LESSON 13 Generate Subtraction Problems
© H
ough
ton
Miff
lin H
arco
urt
Pub
lishi
ng C
ompa
ny
Name
Use addition to solve subtraction.
1. 5 + 5 = 10, so I know 10 - 5 = ■.
2. 6 + 4 = 10, so I know 10 - 4 = ■.
3. 3 + 6 = 9, so I know 9 - 3 = ■.
Solve the vertical form. Use any method.
4. 2 + 5
_
5. 4 + 5
_
6. 7 + 1
_
7. 2 + 8
_
8. 4 + 3
_
9. 3 + 5
_
10. 8 + 1
_
11. 1 + 9
_
12. 6 + 3
_
13. 5 + 4
_
Solve the vertical form. Think about addition.
14. 10 - 9
_
15. 8 - 6
_
16. 9 - 1
_
17. 7 - 2
_
18. 10 - 3
_
19. 9 - 7
_
20. 8 - 1
_
21. 7 - 4
_
22. 8 - 3
_
23. 9 - 6
_
2-14
UNIT 2 LESSON 14 Relate Addition and Subtraction 45
© H
oughton Mifflin H
arcourt Publishing C
ompany
Name2-14
Underline the greater number.Count on from that number.
1. 3 + 7 = ■ 2. 6 + 2 = ■
3. 2 + 5 = ■ 4. 5 + 4 = ■
5. 6 + 3 = ■ 6. 2 + 8 = ■
7. 9 + 1 = ■ 8. 4 + 3 = ■
9. 2 + 6 = ■ 10. 7 + 2 = ■
11. 3 + 4 = ■ 12. 5 + 3 = ■
13. 4 + 6 = ■ 14. 1 + 7 = ■
15. Stretch Your Thinking Write the addition you can use to solve the subtraction. Then solve.
10 - 3 = ■ ■ + ■ = ■
46 UNIT 2 LESSON 14 Relate Addition and Subtraction
© H
ough
ton
Miff
lin H
arco
urt
Pub
lishi
ng C
ompa
ny
Name2-15
Count on to add.
1. 4 + 2 = ■ 2. 3 + 5 = ■ 3. 6 + 2 = ■4. 6
+ 3
_
5. 5 + 5
_
6. 2 + 7
_
7. 3 + 4
_
8. 4 + 4
_
Subtract. Make a circle drawing if you wish.
9. 9 - 2 = ■ 10. 7 - 5 = ■ 11. 6 - 3 = ■
12. 6 - 2
_
13. 9 - 5
_
14. 10 - 7
_
15. 5 - 4
_
16. 8 - 2
_
UNIT 2 LESSON 15 Mixed Practice with Equations 47
© H
oughton Mifflin H
arcourt Publishing C
ompany
Name2-15
Solve. Write how many are left.
1. There are 9 candles.
Then 7 go out.
9 - 7 = ■
2. There are 8 boats.
Then 4 sail away.
8 - 4 = ■
Subtract and write the equation.
3.
Subtract 4 Equation
4.
Subtract 2 Equation
5. Stretch Your Thinking Write numbers to complete the subtraction.
■ - ■ = 5
48 UNIT 2 LESSON 15 Mixed Practice with Equations
© H
ough
ton
Miff
lin H
arco
urt
Pub
lishi
ng C
ompa
ny
Name
Draw a picture to show the story. Write and solve the equation.
Karl sees 2 owls and 5 eagles in a park.
How many birds does he see?
2 + 5 = ■
2-16
UNIT 2 LESSON 16 Focus on Mathematical Practices 49
© H
oughton Mifflin H
arcourt Publishing C
ompany
Name2-16
Use the circles to solve the equation.
1.
10 - 4 = ■
2.
9 - 2 = ■Use addition to solve subtraction.
3. 7 + 3 = 10, so I know 10 - 3 = ■.
4. 9 + 1 = 10, so I know 10 - 1 = ■.
5. 4 + 5 = ■, so I know 9 - 4 = ■.
Solve the vertical form. Think about addition.
6. 6 - 1
_
7. 8 - 4
_
8. 9 - 7
_
9. 10 - 3
_
10. 7 - 6
_
11. Stretch Your Thinking
Solve.
If I know 7 - 4 = ■,
then I know ■ + ■ = ■.
50 UNIT 2 LESSON 16 Focus on Mathematical Practices
