8th grade
posted by raluca on .
write each number as the product of prime factors.
(a) 42__________________
(b) 110_________________
(c)...__________________
(d)...__________________
....
....

42 = 2 * 21
Study this site for the rest of your assignment.
http://www.mathsisfun.com/primefactorization.html 
42=2*7*3.
Then I'd study that site.