Five-Minute Check (over Lesson 9–9)

Main Idea

Example 1:Add Like Fractions

Key Concept: Add Like Fractions

Example 2:Add Like Fractions

Example 3:Add Like Fractions

Add Like Fractions

• I will add fractions with like denominators.

Add Like Fractions

Find + . Use models to check.3

104

10

103

104+ =

103 + 4

107= Add.

Answer: So, + = .3

104

107

10

+

1. A

2. B

3. C

4. D0% 0%0%0%

A. 18

B. 12

D. 45

78

C.

Find + .38

48

Add Like Fractions

Marco ate of a pizza and Jen ate of it. What

fraction of the pizza did the two friends eat in all?

38

18

Add and .38

18

Add Like Fractions

38 + 1

8 = 3 + 18

48=

4 ÷ 48 ÷ 4=

12=

Add the numerators.

Simplify.

Divide the numerator and denominator by the GCF, 4.

Simplify. Check by drawing a picture.

Answer: So, Marco and Jen ate of the pizza.12

1. A

2. B

3. C

4. D0% 0%0%0%

A. of a pie25

B. of a pie 15

C. of a pie 12

D. of a pie110

Georgia ate of a pie and Jericho ate of a pie.

What fraction of the pie did the two eat in all?

310

110

Add Like Fractions

Find + .56

26

56 + 2

6 = 5 + 26

76=

Add the numerators.

Simplify.

16= 1 Write as

a mixed number.

Answer: So, + = 1 .56

26

16

1. A

2. B

3. C

4. D0% 0%0%0%

A. 16

B. 1 19

C. 19

D. 1 23

Find + . 59

59

End of the Lesson

Five-Minute Check (over Lesson 9–9)

Image Bank

Math Tool Chest

Add Like Fractions

1. A

2. B

3. C

4. D0% 0%0%0%

(over Lesson 9–9)

B. <3

128

12

Compare using models or the LCD. and14

23

A. > 212

412

C. < 4

186

18

D. > 6

184

18

1. A

2. B

3. C

4. D0% 0%0%0%

(over Lesson 9–9)

A. < 310

410

B. <4

103

10

C. < 3

155

15

D. > 4

205

20

Compare using models or the LCD. and310

25

1. A

2. B

3. C

4. D0% 0%0%0%

(over Lesson 9–9)

C. > 1518

218

B. <3036

436

Compare using models or the LCD. and56

19

A. > 518

318

D. < 3

181218

1. A

2. B

3. C

4. D0% 0%0%0%

(over Lesson 9–9)

A. > 830

1830

B. <8

302730

C. > 8

154

15

D. < 1220

1820

Compare using models or the LCD. and415

910

1. A

2. B

3. C

4. D0% 0%0%0%

(over Lesson 9–9)

35

410

Replace the with <, >, =, or + to make a true statement.

A. <

B. >

C. =

D. +

1. A

2. B

3. C

4. D0% 0%0%0%

(over Lesson 9–9)

48

12

Replace the with <, >, =, or + to make a true statement.

A. <

B. >

C. =

D. +

1. A

2. B

3. C

4. D0% 0%0%0%

(over Lesson 9–9)

16

15

Replace the with <, >, =, or + to make a true statement.

A. <

B. >

C. =

D. +

1. A

2. B

3. C

4. D0% 0%0%0%

(over Lesson 9–9)

47

23

Replace the with <, >, =, or + to make a true statement.

A. <

B. >

C. =

D. +