Add Subtract Fractions Unlike Denominators

What must you have to add and subtract fractions?

• Common numerators

• Different numerators

• Different denominators

• Common denominators

2/5 + 3/10

• 7/10

• 5/10

• 1/2

• 5/15

8/9 - 1/3 = 

• 7/6

• 5/9

• 2/3

• 8/27

1/3 + 5/12

• 6/12

• 6/15

• 3/4

• 4/4

• A

• B

• C

• D

What is the sum of these fractions in lowest terms?

• 5/12

• 5/24

• 6/12

• 6/144

• 14/16

• 7/8

• 8/7

• 4/10

What is the sum of these fractions in lowest terms?

• 7/18

• 7/9

• 12/9

• 12/81

• 1

• 3/6

• 1/2

• 2

Sarem, Robin, and Braylan are sharing a pizza. Sarem eats 1/4 of the pizza, Robin eats 1/5 of the pizza, and Braylan eats 3/10 of the pizza. What fraction of the pizza is left?

• 4/5

• 3/20

• 17/20

• 4/20