Adding and Subtracting Fractions

What number could be a common denominator for these two fractions?
2/3   and   3/4

• 3
• 4
• 7
• 12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

1/3 + 1/2 = 

• 6/7
• 2/6
• 3/5
• 5/6

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

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

8/9 - 1/3 = 

• 7/6
• 5/9
• 2/3
• 8/27

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 is 9/15 + 4/5?

• 3/5
• 1    5/6
• 1    2/5
• 2/7

What is 3/4 + 2/3

• 5/7

• 1 1/4

• 6/12

• 1 5/12

What is 2/3 + 4/5?

• 1 7/15

• 1 5/6

• 12/65

• 1 2/3

What is 3/4 - 1/2?

• 1      1/4
• 4/5
• 1/4
• 5/6