NF.1 Adding Fractions with Unlike Denominators

Front

What is a common denominator?

Back

A common denominator is a number that can be used as a denominator for two or more fractions, allowing them to be added or subtracted.

Front

How do you find a common denominator for 2/3 and 3/4?

Back

The least common multiple (LCM) of the denominators 3 and 4 is 12, so 12 is a common denominator.

Front

Back

Front

What is the first step in adding fractions with unlike denominators?

Back

Find a common denominator for the fractions.

Front

Which of these numbers could NOT be a common denominator for 2/4 and 3/8: 32, 12, 8, 24?

Back

12 is not a common denominator.

Front

Back

Front

What is the process to add fractions with unlike denominators?

Back

1. Find a common denominator. 2. Convert each fraction to an equivalent fraction with the common denominator. 3. Add the numerators and keep the common denominator.

Front

Back

Front

What is the least common multiple (LCM) of 3 and 4?

Back

The LCM of 3 and 4 is 12.

Front

What does it mean to convert fractions to a common denominator?

Back

It means to change the fractions so they have the same denominator, making it easier to add or subtract them.