Unit 3 Review Questions

5.NF.A.1 Add and subtract fractions with unlike denominators5.NF.A.2 Solve word problems involving addition and subtraction of

fractions referring to the same whole, including cases of unlike denominators

By Shelly Jamison

Unit 3 Targets

We can create equivalent fractions

We can add unlike fractions using equivalents

We can subtract unlike fractions using equivalents

We can solve word problems involving fractions

We can estimate fraction and decimal sums or differences.

Four classmates discussed the following problem. Which classmate do you

agree with?

 A. Rosie says to find a common denominator (24), then make the original fractions

equivalent with the denominator of 24. and , and lastly add the and

numerators leave the denominator as 24 (8 + 12 = 20), so Rosie’s answer is 20/24.

B. John says to add the numerators together (2 + 4 = 6), then add the denominators

together ( 6 + 8 = 14 ), so John’s answer is 6/14 .

C. Sally says to find a common denominator (24), then keep the numerators the same and

add them (2 + 4 = 6), so Sally’s answer is 6/24.

D. Cooper says to find a common denominator (24), and change the original fractions to

Then add the numerators and leave the denominator making the

answer 18/24.

Which is NOT equivalent to ?

A. B.

C. D.

3/12 + 3/4

A. 6/6

B. 6/12

C. 5/6

D. 13/12

8/5 + 5/4

A. 13/20

B. 5 7/20

C. 2 17/20

D. 54/20

Which is equivalent to ?

A. B.

C. D.

1 4/5 - 1/2

A. 1 4/12

B. 13/12

C. 1 2/10

D. 1 3/10

This completes our review showing

that…… We can create equivalent fractions

We can add unlike fractions using equivalents

We can subtract unlike fractions using equivalents

We can solve word problems involving fractions

We can estimate fraction and decimal sums or differences.