Flashcard Finding Common Denominators

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, allowing them to be compared or added together.

Front

How do you find a common denominator for two fractions?

Back

To find a common denominator, you can skip count or list the multiples of each denominator until you find a number that appears in both lists.

Front

What is the least common denominator (LCD)?

Back

The least common denominator (LCD) is the smallest common multiple of the denominators of two or more fractions.

Front

What is the common denominator of 2/4 and 3/8?

Back

The common denominators of 2/4 and 3/8 include 8, 12, and 24, but 12 is NOT a common denominator.

Front

What is the least common denominator of 1/4 and 2/5?

Back

The least common denominator of 1/4 and 2/5 is 20.

Front

How do you subtract fractions with different denominators?

Back

To subtract fractions with different denominators, first find a common denominator, convert the fractions, and then subtract the numerators.

Front

What is the result of 5/6 - 3/12?

Back

The result of 5/6 - 3/12 is 7/12.

Front

Which of the following could NOT be a common denominator for 1/6 and 1/4?

Back

18 could NOT be a common denominator for 1/6 and 1/4.

Front

Why is it important to find a common denominator when adding or subtracting fractions?

Back

Finding a common denominator is important because it allows fractions to be expressed with the same denominator, making it possible to accurately add or subtract them.

Front

What are multiples?

Back

Multiples of a number are the products of that number and any integer, such as 1, 2, 3, etc.