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, list the multiples of each denominator (5 and 6). The smallest common multiple is 30.

Front

What is the sum of 1/4 and 3/8?

Back

1/4 + 3/8 = 5/8.

Front

Which of these is NOT a common denominator for 1/6 and 1/4: 12, 18, 24, 36?

Back

18 is NOT a common denominator.

Front

What is 1 1/2 + 1/4?

Back

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

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

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

How do you convert 1/4 to have a denominator of 8?

Back

Multiply both the numerator and denominator by 2: 1/4 = 2/8.

Front

What is the sum of 2/3 and 1/6?

Back

2/3 + 1/6 = 5/6.

Front

What is the process to add fractions with unlike denominators?

Back

1. Find a common denominator. 2. Convert each fraction. 3. Add the numerators. 4. Simplify if necessary.