Add and Subtract Fractions

What must you have to add and subtract fractions?

• Common numerators
• Different numerators
• Different denominators
• Common denominators

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Solve and SIMPLIFY

• 14/16

• 7/8

• 8/7

• 4/10

Solve and SIMPLIFY

• 2/5

• 5/6

• 4/6

• 1/5

Solve and SIMPLIFY

• 3 1/2

• 3 5/6

• 1 1/6

• 3 5/12

Solve and SIMPLIFY

• 11/20

• 19/20

• 1/4

• 2/5

What is the least common denominator for 3 and 4?

• 6
• 4
• 3
• 12

Tags

CCSS.4.NF.A.2

What is the least common denominator for 7 and 2?

• 12
• 14
• 7
• 6

Tags

CCSS.4.NF.A.2

Simplify the fraction by finding the GCF and dividing:
15/20

• 5/10
• 3/4
• 2/3
• 1/5

Simplify the fraction by finding the GCF and dividing: 
6/42

• 2/5
• 7
• 1/7
• 3/21

3/9 + 4/9

• 7/18
• 7/9
• 12/9
• 12/81

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D