Add Subtract Mixed Numbers With Unlike Denominators

5 1/3 - 2 8/9

(a)  

Tags

CCSS.7.NS.A.1C

2 2/3 + 3 3/5

(a)  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the sum?

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Find the difference.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

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

What is the least common denominator of 1/4 and 1/3?

• 4

• 3

• 12

• 8

A _________ is written as a whole number and a fraction.

• unlike denominators

• mixed number

• proper fraction

• common multiple

The ____________________ is a common multiple of two or more denominators.

• equivalent

• simplest fraction

• common denominator

• mixed number

I know I must _________ if the question asks for the sum.

• add

• subtract

• divide

• multiply

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

I know I must __________ if the question asks for the difference.

• subtract

• add

• multiply

• divide

Tags

CCSS.5.NBT.B.7