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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