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.

Tags

CCSS.4.NF.A.1

CCSS.5.NF.B.5B

Front

What is the least common denominator (LCD)?

Back

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

Front

How do you find the least common denominator for two fractions?

Back

To find the least common denominator, list the multiples of each denominator and identify the smallest multiple that appears in both lists.

Front

What is the least common denominator for 1/2 and 1/3?

Back

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

Front

What is the least common denominator for 3/4 and 2/5?

Back

The least common denominator for 3/4 and 2/5 is 20.

Front

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

Back

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

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the least common multiple (LCM)?

Back

The least common multiple (LCM) is the smallest multiple that is common to two or more numbers, which is used to find the least common denominator.

Front

How can prime factorization help in finding the least common denominator?

Back

Prime factorization can help find the least common denominator by identifying the highest powers of all prime factors involved in the denominators.

Front

What is the least common denominator for 5/6 and 1/2?

Back

The least common denominator for 5/6 and 1/2 is 6.

Front

What is the least common denominator for 7/8 and 1/4?

Back

The least common denominator for 7/8 and 1/4 is 8.