list the prime #s from 1-50 (15)
2,3,5,7,11,13,17,19,23,29,31,37,41,43,47
can 0 be a multiple of an integer
yes
is 1 a prime
no
what is a factor
# of interest/integer - if division is smooth then said integer of factor of # of interest
how to get GCF
prime factor both #s and see which ones are similar
how to get LCM
prime factor > multiple all the common factors with the highest exponent