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 compared.

Front

How do you find a common denominator for 1/5 and 5/6?

Back

To find a common denominator for 1/5 and 5/6, you can multiply the denominators (5 and 6) to get 30, which is the least common multiple.

Front

What is an improper fraction?

Back

An improper fraction is a fraction where the numerator is greater than or equal to the denominator.

Front

Convert the mixed number 4 1/2 to an improper fraction.

Back

4 1/2 = 9/2.

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 convert a mixed number to an improper fraction?

Back

Multiply the whole number by the denominator, then add the numerator. Place this result over the original 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

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

Back

3 3/4 = 15/4.

Front

What is the sum of 1/5 and 5/6?

Back

To add 1/5 and 5/6, first find a common denominator (30), then convert the fractions: 1/5 = 6/30 and 5/6 = 25/30. The sum is 6/30 + 25/30 = 31/30.

Front

What is the process of adding 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.