Prime and composite

Front

What is a prime number?

Back

A prime number is a number greater than 1 that has exactly two factors: 1 and itself.

Front

What is a composite number?

Back

A composite number is a number greater than 1 that has more than two factors.

Front

List all the factors of 15.

Back

1, 3, 5, 15

Front

Is 5 prime or composite?

Back

Prime, because it has two factors: 1 and 5.

Front

Which is not a factor of 18? 7, 2, 3, 9

Back

7

Front

What are factors?

Back

Factors are numbers that are multiplied together to get another number.

Front

What is the next multiple of 12 after 48?

Back

60

Front

What is the smallest prime number?

Back

2

Front

What is the largest single-digit prime number?

Back

7

Front

How many factors does the number 6 have?

Back

4 factors: 1, 2, 3, 6.