Adding and Subtracting Fractions with Unlike Denominators

Front

What is a fraction?

Back

A fraction represents a part of a whole and consists of a numerator (top number) and a denominator (bottom number).

Front

What does it mean to have unlike denominators in fractions?

Back

Unlike denominators are when the bottom numbers of two or more fractions are different, making it necessary to find a common denominator to add or subtract them.

Front

How do you find a common denominator for two fractions?

Back

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

Front

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

Back

The first step is to find a common denominator for the fractions.

Front

How do you add fractions once you have a common denominator?

Back

Once you have a common denominator, add the numerators together and keep the common denominator.

Front

What is the process for subtracting fractions with unlike denominators?

Back

Similar to addition, first find a common denominator, then subtract the numerators while keeping the common denominator.

Front

What is the least common multiple (LCM)?

Back

The least common multiple is the smallest number that is a multiple of two or more numbers.

Front

Example: What is 1/4 + 1/2?

Back

1/4 + 1/2 = 1/4 + 2/4 = 3/4.

Front

Example: What is 3/5 - 1/10?

Back

3/5 - 1/10 = 6/10 - 1/10 = 5/10 = 1/2.

Front

What is the importance of simplifying fractions?

Back

Simplifying fractions makes them easier to understand and work with, and it helps in finding equivalent fractions.