Adding 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.

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.

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.

Front

Convert the mixed number 3 1/4 to an improper fraction.

Back

3 1/4 = (3 * 4 + 1)/4 = 13/4.

Front

What is the first step in adding 2 1/3 and 1 2/5?

Back

Convert both mixed numbers to improper fractions.

Front

What is the sum of 2 1/3 and 1 2/5?

Back

2 1/3 + 1 2/5 = 2 1/3 + 1 2/5 = 3 11/15.

Front

What do you do if the sum of the fractions is greater than 1?

Back

Convert the improper fraction to a mixed number and add it to the whole number.

Front

What is the least common denominator (LCD)?

Back

The least common denominator is the smallest number that can be used as a common denominator for two or more fractions.

Front

Find the least common denominator for 1/3 and 1/4.

Back

The least common denominator for 1/3 and 1/4 is 12.

Front

How do you convert fractions to have a common denominator?

Back

Multiply the numerator and denominator of each fraction by the necessary factor to reach the least common denominator.