Which numbers are the factors in this calculation?

4 x 25 = 100

• 4

• 25

• 100

What number pairs with 20 when finding the factors of 100?

• 5

• 10

• 4

• 6

What number has these factor pairs?

1 and 30

2 and 15

3 and 10

5 and 6

• 29

• 30

• 32

• 34

What is the product of 15 and 5?

7 x 8 =

6 x __ = 36

7 x 7 =

Which of these is a square number?

Hint: A square number is the answer to a number times itself (e.g. 9 is a square number because 3 x 3 = 9)

• 12

• 18

• 25

• 40

Answer explanation

A square number is the answer to a number times itself (e.g. 9 is a square number because 3 x 3 = 9)

What number is a factor of every number?

What is a prime number?

• A number with only two factors (one and itself)

• A number that ends in 1, 3, 5, 7 or 9.

• A number that is the answer to a number being multiplied by itself (e.g. 3 x 3 = 9)

• A number that is less than 0.