Factors, Multiples, Prime and Composite

Front

What is a factor?

Back

A factor is a number that divides another number without leaving a remainder.

Front

What is a multiple?

Back

A multiple is a number that can be divided by another number without a remainder. For example, multiples of 3 are 3, 6, 9, 12, etc.

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.

Front

What is a composite number?

Back

A composite number is a number that has more than two positive divisors. For example, 4, 6, and 8 are composite numbers.

Front

List the first 5 multiples of 4.

Back

4, 8, 12, 16, 20

Front

Which number is a multiple of 5? 10, 12, 14, 16

Back

10

Front

What are the factors of 12?

Back

1, 2, 3, 4, 6, 12

Front

Is 21 a prime number?

Back

No, 21 is a composite number because it has factors other than 1 and itself (3 and 7).

Front

What is the smallest prime number?

Back

The smallest prime number is 2.

Front

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

Back

The GCF of 8 and 12 is 4.