How do you find all the factor pairs of 40?

Answer 1

1 x 40

2 x 20

4 x 10

5 x 8

Those are all the factors

Answer 2

Write down 40 and 1. Divide by two. Write down 20 and 2. Divide by two. Write down 10 and 4. Divide by two. Write down 5 and 8. Stop.

(40,1)(20,2)(10,4)(8,5)

Answer 3

Divide 40 by 1, 2, 4 and 5. Arrange them in pairs.