Adding and Subtracting Fraction with Unlike Denominators

Front

What is a fraction?

Back

Front

What does it mean to have unlike denominators?

Back

Front

How do you add fractions with unlike denominators?

Back

To add fractions with unlike denominators, first find a common denominator, convert each fraction to an equivalent fraction with that denominator, and then add the numerators.

Front

What is the least common denominator (LCD)?

Back

The least common denominator (LCD) is the smallest multiple that two or more denominators share. For example, the LCD of 4 and 10 is 20.

Front

How do you subtract fractions with unlike denominators?

Back

To subtract fractions with unlike denominators, find a common denominator, convert each fraction to an equivalent fraction with that denominator, and then subtract the numerators.

Front

Back

The first step is to find the least common denominator (LCD) of 4 and 10, which is 20.

Front

Back

Front

Back

Front

Can you add fractions with unlike denominators directly?

Back

No, you cannot add fractions with unlike denominators directly. You must first find a common denominator.

Front

What is an equivalent fraction?

Back