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Finding a GCF of Two Numbers

Instructions

Find the Greatest Common Factor (CGF) of the two terms.

Checking Your Answers

Enter an answer in each box, then click the "Check Worksheet" button at the bottom of the page to automatically check each answer.  You may also check your answers manually by referring to the Answer Sheet.

S1
8 12
1
1 10
2
5 50
3
45 54
4
65 156
5
88 121
6
66 165
7
36 54
8
40 50
9
35 175
10
100 1000
11
5 9
12
35 21
13
132 88
14
153 85
15
52 338
16
32 324
17
101 1010
18
290 17
19
135 150
20
495 175
   
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