Factors of Numbers

Front

What are factors?

Back

Factors are numbers that can be multiplied together to get another number. For example, the factors of 10 are 1, 2, 5, and 10.

Front

List all the factors of 15.

Back

1, 3, 5, 15

Front

Is 7 a factor of 42?

Back

Yes

Front

Which number is a factor of 10?

Back

5

Front

List all the factors of 18.

Back

1, 2, 3, 6, 9, 18

Front

Which number is a factor of 42?

Back

7

Front

What is the smallest factor of any number?

Back

The smallest factor of any number is always 1.

Front

What is a prime factor?

Back

A prime factor is a factor that is a prime number. For example, the prime factors of 12 are 2 and 3.

Front

What is the greatest common factor (GCF)?

Back

The GCF is the largest factor that two or more numbers have in common. For example, the GCF of 8 and 12 is 4.

Front

How do you find the factors of a number?

Back

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