Adding fractions with unlike denominators

What does the DENOMINATOR tell you? Select all that apply.

• The number of pieces in a whole

• The number of pieces added together

• The name of the fraction

• The size of the pieces

• The shape of the pieces

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

What is the least common denominator for 3/5 and 2/3?

• 5

• 3

• 8

• 15

• 30

What is the least common denominator for 5/6 and 2/3?

• 18

• 6

• 3

• 9

• 24

What is the least common denominator for 3/7 and 1/4?

• 11

• 28

• 14

• 4

• 7

What is the least common denominator for 3/8 and 2/6?

• 24

• 48

• 12

• 8

• 6

What is the least common denominator for 4/9 and 2/3?

• 3

• 6

• 9

• 18

• 27

What is the least common denominator for 3/10 and 2/6?

• 60

• 30

• 20

• 120

• 16

2/3 + 1/5

• 3/8

• 2/15

• 11/15

• 13/15

Tags

CCSS.7.NS.A.1C

1/2 + 1/3

• 5/6

• 2/5

• 2/6

• 4/5

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

2/5 + 3/10

• 5/50

• 5/15

• 7/10

• 5/10

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2