Subtracting Mixed Numbers with Regrouping

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a fraction, such as 2 1/2.

Tags

CCSS.3.NF.A.3C

Front

How do you subtract mixed numbers?

Back

To subtract mixed numbers, convert them to improper fractions, find a common denominator, and then subtract.

Tags

CCSS.7.NS.A.1C

Front

What is regrouping in subtraction?

Back

Regrouping is the process of borrowing from the next highest place value to make subtraction easier.

Tags

CCSS.7.NS.A.1C

Front

Convert 6 1/4 to an improper fraction.

Back

6 1/4 = 25/4.

Front

Convert 2 6/8 to an improper fraction.

Back

2 6/8 = 22/8.

Front

What is the first step in subtracting 6 1/4 - 2 6/8?

Back

Convert both mixed numbers to improper fractions.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is 25/4 - 22/8?

Back

First, convert 25/4 to 50/8. Then, 50/8 - 22/8 = 28/8 = 3 1/2.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the result of 4 1/3 - 1 2/3?

Back

The result is 2 2/3.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

How do you find a common denominator for 1/3 and 2/3?

Back

The common denominator for 1/3 and 2/3 is 3.

Front

What is 7 3/15 - 3 4/5?

Back

The result is 3 2/5.

Tags

CCSS.7.NS.A.1C