This math topic focuses on practicing the skill of finding the Greatest Common Factor (GCF) of pairs of numbers. It includes various problems where students are asked to determine the GCF from a list of multiple-choice answers. This is one part of a broader introduction to factoring and finding greatest common factors. Each question provides a pair of numbers, and students must select the correct GCF from several options presented.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

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Finding Greatest Common Factor Worksheet

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Math worksheet on 'Finding Greatest Common Factor (Level 1)'. Part of a broader unit on 'Factoring and Greatest Common Factor - Intro' Learn online: app.mobius.academy/math/units/factoring_and_greatest_common_factor_intro/
1
Find the greatest common factor of these numbers
8, 12
a
3
b
15
c
1
d
4
e
20
f
2
2
Find the greatest common factor of these numbers
10, 5
a
32
b
8
c
5
d
3
e
29
f
1
3
Find the greatest common factor of these numbers
8, 10
a
11
b
15
c
5
d
9
e
1
f
2
4
Find the greatest common factor of these numbers
6, 12
a
6
b
17
c
1
d
32
e
16
f
9
5
Find the greatest common factor of these numbers
5, 10
a
1
b
15
c
5
d
4
e
3
f
24
6
Find the greatest common factor of these numbers
6, 4
a
1
b
5
c
2
d
18
e
4
f
3
7
Find the greatest common factor of these numbers
4, 6
a
1
b
9
c
11
d
5
e
12
f
2