Add/Subtract Fractions with unlike Denominators

Front

What do you do when adding or subtracting fractions with unlike denominators?

Back

You need to find a common denominator before you can add or subtract the fractions.

Front

What is a common denominator?

Back

A common denominator is a number that is a multiple of the denominators of two or more fractions.

Front

How do you simplify a fraction?

Back

To simplify a fraction, divide the numerator and the denominator by their greatest common factor (GCF).

Front

What is the first step in adding 2/3 and 1/4?

Back

Find a common denominator, which in this case is 12.

Front

What is the sum of 2/3 and 1/4?

Back

The sum is 11/12.

Front

How do you convert 3/4 to twelfths?

Back

Multiply the numerator and denominator by 3 to get 9/12.

Front

What is the result of 5/10 + 8/5?

Back

The result is 2 1/10.

Front

When do you simplify fractions?

Back

You simplify fractions whenever possible, unless the fraction is already in its simplest form.

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

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

Back

The LCM of 3 and 4 is 12.