1) 1, 2, 3, 6, 9, 18

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

3) 1, 2, 4, 8, 16, 32, 64

4) 1, 5, 15, 75

5) 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

6) 1, 2, 4, 7, 10, 14, 20, 35, 70, 140

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

3) 1, 2, 4, 8, 16, 32, 64

4) 1, 5, 15, 75

5) 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

6) 1, 2, 4, 7, 10, 14, 20, 35, 70, 140

**Working**

**Questions**

1) Write down all of the factors of 18. Use factor pairs to help you.

2) Write down all of the factors of 40. Use factor pairs to help you.

3) Write down all of the factors of 64. Use factor pairs to help you.

4) Write down all of the factors of 75. Use factor pairs to help you.

5) Write down all of the factors of 90. Use factor pairs to help you.

6) Write down all of the factors of 140. Use factor pairs to help you.