Common Multiples and Common Denominators

Front

What is a Common Multiple?

Back

A common multiple is a number that is a multiple of two or more numbers. For example, 30 is a common multiple of 6 and 10.

Front

What is the Least Common Multiple (LCM)?

Back

The least common multiple (LCM) is the smallest multiple that two or more numbers share. For example, the LCM of 6 and 10 is 30.

Front

How do you find the LCM of two numbers?

Back

To find the LCM, list the multiples of each number and find the smallest one they have in common.

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. It allows you to add or compare fractions.

Front

What is the Least Common Denominator (LCD)?

Back

The least common denominator (LCD) is the smallest common denominator that can be used for two or more fractions.

Front

What is the LCD of 1/4 and 1/6?

Back

The LCD of 1/4 and 1/6 is 12.

Front

Which number is NOT a common denominator for 2/4 and 3/8?

Back

12 is NOT a common denominator for 2/4 and 3/8.

Front

What is the LCM of 7 and 2?

Back

The LCM of 7 and 2 is 14.

Front

What is the LCM of 5 and 3?

Back

The LCM of 5 and 3 is 15.

Front

What is the LCM of 4 and 6?

Back

The LCM of 4 and 6 is 12.