Fractions Common Denominator

What is the least common denominator of 1/9 and 2/3?

• 6

• 3

• 9

• 21

Which of these numbers could NOT be a common denominator for these two fractions?
2/4   and   3/8

• 32

• 12

• 8

• 24

Find the lowest common denominator of these fractions: 2/7 and 2/21

• 7

• 21

• 18

• 147

Find the least common denominator of 1/5 and 2/10.

• 10

• 5

• 50

• 15

You must find the ​ (a)   before you can add or subtract fractions with unlike denominators.

• common denominator

• common numerator

• multiple

• simplified fraction

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

You must find the (a)   before you can add or subtract fractions with unlike denominators.

• common denominator

• common numerator

• multiple

• simplified fraction

Tags

CCSS.7.NS.A.1C

• 6

• 12

• 8

• 7

• 10

• 15

• 20

• 25

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Find the value for c:

• 4

• 6

• 8

• 14

Tags

CCSS.7.RP.A.2B

Which of these numbers could NOT be a common denominator for 1/6 and 5/18?

• 6

• 18

• 36

• 108