Add and Subtract Fractions with Models (Unlike denominators)

Is this a correct answer?

• Yes, the student correctly added.
• No, you cannot add unlike denominators
• No, 5 + 7 is not 12
• No, 2 + 3 is not 5

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

In this problem, you need to change ___ to ___ before you can find the sum.

• 1/8 to 1/2

• 1/2 to 1/8

• 1/2 to 4/8

• 1/2 to 8/4

Tags

CCSS.4.NF.B.3A

Solve this problem.

(a)  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Before finding the sum, you need to change ____ to _____.

• 1/6 to 1/3

• 1/3 to 1/6

• 1/3 to 2/3

• 1/3 to 2/6

Tags

CCSS.4.NF.B.3A

Solve this problem.

(a)  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

You can not find the sum for this problem until you change _____ to _____.

• 1/6 to 5/6

• 1/2 to 3/6

• 1/6 to 1/2

• 1/2 to 6/3

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Find the sum.

(a)  

Tags

CCSS.4.NF.B.3A

Before finding the sum, you must change ___ to ___.

• 1/8 to 2/8

• 1/4 to 1/8

• 1/4 to 2/8

• 4/8 to 2/4

Tags

CCSS.4.NF.B.3A

Evaluate.

(a)  

Tags

CCSS.4.NF.B.3A

Before finding the difference, you must change ___ to ___.

• 1/2 to 2/4

• 1/4 to 1/2

• 1/4 to 2/4

• 1/2 to 1/2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2