Unit 3 Review Questions 5. NF. A Unit 3 Review Questions 5.NF.A.1 Add and subtract fractions with unlike denominators 5.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 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. A

A

Which is NOT equivalent to ? A. B. C. D. A

B

3/12 + 3/4 A. 6/6 B. 6/12 C. 5/6 D. 13/12 A

C

8/5 + 5/4 A. 13/20 B. 5 7/20 C. 2 17/20 D. 54/20 C

D

Which is equivalent to ? A. B. C. D. C

A ----- Meeting Notes (3/3/15 10:35) ----- end of block 3

1 4/5 - 1/2 A. 1 4/12 B. 13/12 C. 1 2/10 D. 1 3/10 D

A

B

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.