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