Factors and Multiples

Front

What is a prime number?

Back

A prime number is a number that has only two factors: 1 and itself.

Front

Fill in the missing multiple: 3: 3, 6, 9, ___, 15, 18, 21

Back

12

Front

What do factor ninjas do to the product?

Back

Factor ninjas make the product smaller.

Front

What factors do 15 and 21 have in common?

Back

1 and 3.

Front

What are the factors of 21?

Back

1, 3, 7, 21.

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.

Front

List the first five multiples of 4.

Back

4, 8, 12, 16, 20.

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 3 and 5?

Back

The LCM of 3 and 5 is 15.