Factors of 36, 1,2,3,4,6,9,12,18,36
Factors of 45- 1,3,5,9,15,45
The common factors or 36 and 45 are 1, 3 and 9.
Factors of 24- 1,2,3,4,6,8,12,24
Factors or 54- 1,2,3,6,9,18,27,54
The common factors of 24 and 54 are 1,2,3 and 6
Hope this helps
"color the piece according to your color chart." Do you have that? If you don't, I wouldn't worry, you still did all the work and got all the answers, so your teacher should be fine with it.