Finding The Greatest Common Factor Of Whole Numbers Worksheet With Answer Key

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Basic Arithmetic Skill
Finding the Greatest Common Factor of Whole Numbers
Find the GCF of each using the prime factorization of each whole number. Do not use exponents.
1) 33, 22
2) 41, 22
3) 30, 20
4) 45, 33
5) 27, 33
6) 7, 33
7) 32, 48
8) 24, 48
9) 30, 40
10) 44, 22
11) 5, 92
12) 12, 80
13) 70, 28
14) 50, 70
15) 48, 72
16) 80, 40
17) 100, 40
18) 91, 98
19) 77, 98
20) 60, 72
21) 12, 18, 60
22) 24, 60, 48
23) 45, 60, 30
24) 18, 20, 44
25) 56, 32, 48
26) 22, 55, 44
27) 35, 42, 49
28) 52, 24, 60
29) 12, 48, 24
30) 42, 28, 56

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