Factors and Multiples

Front

What are factors?

Back

Factors are numbers that can be multiplied together to get another number. For example, the factors of 24 are 1, 2, 3, 4, 6, 8, 12, and 24.

Front

What are multiples?

Back

Multiples are the result of multiplying a number by an integer. For example, the first 5 multiples of 8 are 8, 16, 24, 32, and 40.

Front

List all the factors of 12.

Back

1, 2, 3, 4, 6, 12

Front

Which number is NOT a factor of 12? 1, 3, 5, 12

Back

5 is NOT a factor of 12.

Front

Is 2 a factor of 15?

Back

No, 2 is not a factor of 15.

Front

List all the factors of 27.

Back

1, 3, 9, 27

Front

What is the greatest common factor (GCF) of 8 and 12?

Back

The GCF of 8 and 12 is 4.

Front

What is the least common multiple (LCM) of 4 and 5?

Back

The LCM of 4 and 5 is 20.

Front

How do you find the factors of a number?

Back

To find the factors of a number, divide it by integers starting from 1 up to that number and see which divisions result in whole numbers.

Front

What is a prime number?

Back

A prime number is a number greater than 1 that has no positive divisors other than 1 and itself.