Common Denominator Practice

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

• 6
• 3
• 9
• 21

What would be the common denominator for adding 1/2 + 3/4?

• 6

• 4

• 9

• 2

Which fraction renames 3/4 with a denominator of 12?

• 3/12

• 4/12

• 12/12

• 9/12

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Which of the following would be the new fractions for finding common denominators for 3/4 and 2/6?

• 9/12 and 4/12

• 6/8 and 4/12

• 9/12 and 6/18

• 2/12 and 6/12

What step should you do first when adding fractions with unlike denominators?

• Just add the denominators together

• Find a common denominator

• Add the numerators together first

• Chang each numerator to be the same

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

In the fraction 7/12, which number is the denominator?

• 7

• 12

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

In the fraction 12/15, which number is the numerator?

• 15

• 12

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

To add and subtract fractions, the fractions need to have a...

• common numerator

• common denominator

• common numerator and denominator

• mixed number

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

• 14

• 12

• 10

• 8

•  No, because 8 is only a multiple of 4 but not of 6.

• Yes, 8 is a multiple of 4 and 6.
  

• I don't know!!