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May 1, 2016
Posted by **esha** on Tuesday, March 8, 2011 at 6:19pm.

- math -
**Ariannah**, Tuesday, March 8, 2011 at 7:45pmNot sure how to word it. But 9 x 9 is 81, right? 81 is a multiple of 3 because 9 is a multiple of 3. Another example, 7 x 6 is 42. 2 and 3 go into 6 which goes into 42. Its confusing at first but I hope i helped.

Lemme summarize. You cant get 9 without 3. Just like you cant get 108 without 1,2,3,4,6,9,12,18,27,36,54,and 108. What do those numbers have in common?

Sorry if I was no help. But if you know what a factor tree is it may help....

EX:

108

/ \

2 x 54

/ \

27 x 2

/ \

3 x 9

/ \

3 x 3