Adding Fractions Common Denominators

Solve

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Solve:

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What do you need to have when adding unlike fractions?

• common denominator

• common numerator

• common numerator and denominator

Tags

CCSS.7.NS.A.1C

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

• 6

• 4

• 9

• 2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

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

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

• 32

• 12

• 8

• 24

Which of these numbers could NOT be a common denominator for these two fractions?
1/6   and   1/4

• 12

• 18

• 24

• 36

Which of these numbers could NOT be a common denominator for these three fractions?
1/3   and 2/5   and   3/10

• 15

• 30

• 60

• 90

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

• 14

• 21

• 7

• 42

What would be the common denominator for adding 3/9 + 4/6?

• 9

• 12

• 18

• 27