Add and Subtract Mixed Numbers

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a fraction, such as 2 1/3.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

How do you add mixed numbers?

Back

To add mixed numbers, first add the whole numbers, then add the fractions. If the fraction sum is improper, convert it to a mixed number.

Tags

CCSS.7.NS.A.1C

Front

What is the first step in subtracting mixed numbers?

Back

The first step is to subtract the whole numbers, then subtract the fractions.

Tags

CCSS.7.NS.A.1C

Front

What do you do if the fraction in a mixed number is larger than the fraction you are subtracting?

Back

If the fraction is larger, you need to borrow 1 from the whole number, converting it into an equivalent fraction.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you convert an improper fraction to a mixed number?

Back

Divide the numerator by the denominator. The quotient is the whole number, and the remainder is the new numerator.

Front

What is the sum of 3 1/4 and 2 2/3?

Back

The sum is 5 11/12.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

If you have 6 1/3 and you subtract 2 3/8, what is the result?

Back

The result is 3 13/24.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you find a common denominator for fractions?

Back

To find a common denominator, identify the least common multiple (LCM) of the denominators.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the difference between 5 1/2 and 2 1/4?

Back

The difference is 3 1/4.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How can you check your work after adding or subtracting mixed numbers?

Back

You can check your work by converting the mixed numbers to improper fractions, performing the operation, and converting back.

Tags

CCSS.7.NS.A.1C