Finding Common Denominators

What is the common denominator for the fractions 1/2 and 1/3?

• 6

• 7

• 9

• 3

What is the least common multiple of 4 and 5?

• 20

• 10

• 15

• 25

What is the common denominator for the fractions 3/4 and 5/6?

• 12

• 24

• 18

• 30

What is the a common multiple of 6 and 8?

• 24

• 16

• 32

• 48

What number could be a common denominator for these two fractions?
1/5   and   5/6?

• 30
• 11
• 6
• 5

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

• 32
• 12
• 8
• 24

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

• 3
• 4
• 7
• 12

What number could be a common denominator for these two fractions?
3/10   and   1/5

• 5
• 50

• 15
• These numbers do not have a common denominator

What is the lower half of a fraction called?

• denominator

• numerator

• divisor

• operation

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

To find a common denominator, we can _______ two denominators together/

Tags

CCSS.4.OA.C.5