1 2
3 4
Remember, the greatest common factor is the highest number that divides exactly into two or more numbers evenly.
7. Find the greatest common factor for each pair of numbers.
36, 48 factors of 36 = ______________ factors of 48 = ______________ GCF (36, 48) = _____________ a. b. 21, 63 factors of 21 = ______________ factors of 63 = ______________ GCF (21, 63) = _____________
Least Common Multiple
1
2 3
Remember, the least common multiple is the smallest number that is a multiple of two or more numbers.
8. Find the least common multiple for each pair of numbers.
2, 3 multiples of 2= _____________ multiples of 3= _____________ LCM (2, 3) = ________________ a. 4, 5 multiples of 4= ______________ multiples of 5= ______________ LCM (4, 5) = _________________ b.
15, 60 factors of 15 = ______________ factors of 60 = ______________ GCF (15, 60) = _____________ c.
24, 42 factors of 24 = ______________ factors of 42 = ______________ GCF (24, 42) = _____________ e. d. 27, 54 factors of 27 = ______________ factors of 54 = ______________ GCF (27, 54) = _____________
f. 44, 99 factors of 44 = ______________ factors of 99 = ______________ GCF (44, 99) = _____________
72, 96 factors of 72 = ______________ factors of 96 = ______________ GCF (72, 96) = _____________ g.
h. 56, 84 factors of 56 = ______________ factors of 84 = ______________ GCF (56, 84) = _____________ 3, 5 multiples of 3= _____________ multiples of 5= _____________ LCM (3, 5) = ________________ c.
2, 15 multiples of 2= _____________ multiples of 15= ____________ LCM (2, 15) = _______________ e. 5, 7 multiples of 5= _____________ multiples of 7= _____________ LCM (5, 7) = ________________ d.
5, 8 multiples of 5= _____________ multiples of 8= _____________ LCM (5, 8) = ________________ f.
3, 24 multiples of 3 = _____________ multiples of 24 = ____________ LCM (3, 24) = _______________ g. 6, 16 multiples of 6= _____________ multiples of 16= ____________ LCM (6, 16) = _______________ h.
