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 1/2.

Tags

CCSS.3.NF.A.3C

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

How do you subtract mixed numbers?

Back

To subtract mixed numbers, first subtract the whole numbers, then subtract the fractions. If the fraction from the top is smaller than the bottom, borrow from the whole number.

Tags

CCSS.7.NS.A.1C

Front

What is an improper fraction?

Back

An improper fraction is a fraction where the numerator is greater than or equal to the denominator, such as 5/4.

Tags

CCSS.3.NF.A.3C

Front

Convert the mixed number 3 1/2 to an improper fraction.

Back

3 1/2 = 7/2.

Front

Convert the improper fraction 9/4 to a mixed number.

Back

9/4 = 2 1/4.

Front

What is the first step in adding 5 2/3 and 4 3/5?

Back

Convert both mixed numbers to improper fractions.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What do you do if the sum of the fractions is greater than 1 when adding mixed numbers?

Back

Convert the sum to a mixed number and add it to the whole number sum.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you find a common denominator when adding or subtracting fractions?

Back

Find the least common multiple (LCM) of the denominators.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the least common multiple (LCM) of 3 and 5?

Back

The LCM of 3 and 5 is 15.