is 780 divisible by 10?
show your work.

out of 2, 3, 5, 6, 9 & 10, which number is divisible by 425?
show your work.

out of 2, 3,5, 6, 9 & 10, which number is divisible by 297?
show your work.

list all positive factors of 86

what are the prime-power factorization for 80?

what are the prime-power factorization for 54?

what is the greatest common factor of 105 & 75?
write them out.

what is the greatest common factor of 140 & 80?
write them out.