Add and Subtract Fractions and Mixed Numbers with Unlike Denominators

Caleb had two candy bars. He ate 1/6 of a chocolate candy bar and 5/8 of a caramel candy bar. How much more did he eat of the caramel candy bar?

• 4/24

• 15/24

• 11/24

• 6/14

What number could be a common denominator for these two fractions?
2/3   and   3/4

• 3
• 4
• 7
• 12

Jada ate 3/8 of a pizza and Isaiah ate 1/4 of the pizza. How much pizza did they eat in all?

• 1/2
• 5/8
• 3/4
• 7/8

Solve.

1/2 + 1/3 =

• 2/5

• 3/5

• 5/3

• 5/6

Which two fractions have a common denominator of 6?

• 1/2 and 1/4

• 1/3 and 1/18

• 1/2 and 1/3

• 1/6 and 1/12

When adding unlike fractions you must

• add the denominators

• subtract the denominators

• Find like denominators, make equivalent fractions, then solve.

Solve.

8/9 - 1/3

• 7/6

• 5/9

• 2/3

• 8/27

Solve

4/5 - 1/20

• 0

• 20/15

• 3/15

• 15/20

When subtracting fractions that don't have like denominators, what is the first step?

• Find their least common denominator

• Convert them to decimals

• Find their greatest common factor

• Subtract the numerators

Which of these sums is greater than 1?

• 1/5 + 3/8

• 1/3 + 3/10

• 1/8 + 2/5

• 4/5 + 5/8