What is the factor tree of 45?

Answer 1

45

15,3

5,3,3
You break it down step by step. First, what two numbers can be multiplied together to get 45? We'll do 9 and 5. 5 is prime, so it can't be broken down any further.

But 9 can! 3 x 3

So now what you have left is 3 x 3 x 5 AKA 32 x 5