any number that has 9 factor also has 3 as a factor. why is this

Question

any number that has 9 as a factor also has 3 as a factor why is this

Answer 1

Hi, Annie.

Factors are numbers that multiply together to give another number. You can also say that a number can be divided evenly by its factors.

If the factors of a number can also be factored, then the number can be divided by those smaller factors as well. For example, 6 is a factor of 30.  6 is 2 times 3, so that means 2 and 3 are also factors of 30.
You can divide 30 by 2, by 3 and by 6 to find other factors as well.

Hope this helps!

Answer 2

Think of 9 as 3*3.  If a number has nine as a factor it clearly has 3 as a factor.