Adding Fractions with Common Denominators

When adding or subtracting fractions, I NEVER add or subtract the...

• numerators

• denominators

• mixed numbers

• equivalent fractions

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What must you do first in order to add or subtract fractions with unlike denominators?

• add the numerators

• add the denominators

• find a common denominator

• find a common numerator

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Tags

CCSS.7.NS.A.1C

2/6 + 1/2 =

• 5/6

• 3/6

• 4/6

• 3/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Q1. What is the ratio of 14 to 16?

• 14/16

• 7/8

• 8/7

• 4/10

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

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?
1/5   and   5/6?

• 30

• 11

• 6

• 5

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

• 5

• 10

• 15

• These numbers do not have a common denominator

5/6 + 1/12 =

• 6/18

• 5/60

• 11/12

• 10/12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

1/9 + 2/27

• 3/27

• 5/27

• 3/27

• 3/36

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2