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UNIT 8: FACTORING

To 'factor' a number means to break it up into numbers that can be multiplied together to get the original number. EXAMPLES: 6 = 3 X 2 The factors of 6 are 3 and 2 9 = 3 X 3 The factors of 9 are 3 and 3 Sometimes, numbers can be factored into different combinations. For example: 8 = 4 X 2 = 2 X 2 X 2 Two different ways to factor: 18 = 9 X 2 or 6 X 3

Factor the following numbers.

1)

10

2)

15

3)

20

4)

21

5)

22

6)

4

7)

12

8)

14

9)

26

10)

27

11)

25

12)

30

13)

28

14)

50

15)

33

16)

34

17)

70

18)

46

19)

39

20)

This problem is hard! 169

21)

This problem is hard! 95

22)

This problem is hard! 221