Least Common Denominator Plus Review

What is the least common denominator of 1/4 and 2/3?

• 6

• 3

• 12

• 21

Mr. Nickelson tells the class that they double the least common denominator for 1/2 , 3/5 , and 9/15 to find the number of the day. Which number is the number of the day?

• 30

• 15

• 60

• 32

Solve this equation using the least common denominator.
¼ + ½

• 3/4

• 2/8

• 6/4

• 6/8

Match the following words to their meaning.

• one of the numbers in a multiplication sentence

• Common

• the answer when 2 numbers are multiplied

• Factor

• Same

• Multiple

• Bottom number of a fraction

• Least

• Smallest

• Denominator

What is the least common denominator of 1/7 and 3/6?

• 14

• 21

• 7

• 42

• 45

• 9

• 5

• 90

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

• 7

• 4

• 28

• 56

• 15

• 3

• 45

• 30