Adding & Subtracting Fractions Review

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 three fractions?
1/2   and   1/3   and   1/4

• 9
• 8
• 12
• 6

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

• 32
• 12
• 8
• 24

3/4 + 2/8 = 

• 1
• 5/12
• 6/32
• 5/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

5/7 + 1/28 = 

• 6/35
• 12/196
• 21/28
• 1

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

1/2 + 1/3 + 1/5 = 

• 31/30
• 3/10
• 1/30
• These fractions cannot be added

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

4/5 - 1/20 = 

• 0
• 20/15
• 3/15
• 15/20

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What must you have to add and subtract fractions?

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

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 4 9/15
• 4 1/4
• 4

Tags

CCSS.7.NS.A.1C