Common Denominator

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 compared or combined.

Front

What is the least common denominator (LCD)?

Back

The least common denominator (LCD) is the smallest number that is a common denominator for two or more fractions.

Front

How do you find the least common denominator of 1/4 and 2/5?

Back

List the multiples of each denominator (4: 4, 8, 12, 16, 20; 5: 5, 10, 15, 20). The smallest common multiple is 20.

Front

Which fraction renames 3/4 with a denominator of 12?

Back

9/12 is equivalent to 3/4.

Front

What is the least common denominator of 1/7 and 3/6?

Back

The least common denominator is 42.

Front

Which of these numbers could NOT be a common denominator for 2/4 and 3/8?

Back

12 cannot be a common denominator.

Front

What is the least common denominator you could use to subtract 1/3 and 1/4?

Back

The least common denominator is 12.

Front

How do you convert a fraction to have a common denominator?

Back

Multiply the numerator and denominator of the fraction by the same number to create an equivalent fraction with the desired denominator.

Front

What is an example of finding a common denominator for 1/2 and 1/3?

Back

The least common denominator is 6. Convert 1/2 to 3/6 and 1/3 to 2/6.

Front

Why is it important to find a common denominator?

Back

Finding a common denominator allows you to add, subtract, or compare fractions accurately.