Adding Fractions

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

What number could be a common denominator for these three fractions?
1/2   and   1/3   and   1/4

• 9
• 8
• 12
• 6

Fill in the blank in order to create a true number sentence:
1/2 = __ /8

• 2
• 4
• 6
• 8

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Fill in the blank in order to create a true number sentence:
3/5 = __ /10

• 6
• 15
• 5
• 10

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Fill in the blank in order to create a true number sentence:
1/3 = __ /30

• 3
• 5
• 10
• 15

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

7/8 - 1/4 =

• 3/4

• 6/4

• 5/8

• 1/2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

5/7 + 1/14 =

• 6/14

• 4/14

• 11/14

• 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

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