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.

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 for two fractions, list the multiples of each denominator and identify the smallest multiple that appears in both lists.

Front

What is the least common denominator for 1/3 and 4/6?

Back

The least common denominator for 1/3 and 4/6 is 6.

Front

What is the least common denominator for 3/8 and 1/6?

Back

The least common denominator for 3/8 and 1/6 is 24.

Front

What is the least common denominator for 2/5 and 3/7?

Back

The least common denominator for 2/5 and 3/7 is 35.

Front

What is the least common denominator for 1/8 and 2/9?

Back

The least common denominator for 1/8 and 2/9 is 72.

Front

What is the least common denominator for 6/10 and 2/6?

Back

The least common denominator for 6/10 and 2/6 is 30.

Front

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

Back

Finding a common denominator is important when adding fractions because it allows the fractions to be expressed with the same denominator, making it possible to combine them.

Front

What is the relationship between the least common multiple (LCM) and the least common denominator (LCD)?

Back

The least common denominator (LCD) of two or more fractions is the same as the least common multiple (LCM) of their denominators.