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GCF&LCM Practice

Authored by Mary Anderson

Mathematics

6th Grade

CCSS covered

Used 5+ times

GCF&LCM Practice
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12 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Find the GCF of 64 and 144.
Hint-Remember to use your factor trees to help you.

8
6
16
2

Tags

CCSS.6.NS.B.4

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Using a Factor Tree, find the prime factorization of 48 in expanded form. 

2 x 12 x 12
2 x 2 x 2 x 2 x 3 x 3 x 5
2 x 2 x 2 x 2 x 3
7 x 7 x 7 

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

GCF of 27 and 70

3
5
7
10

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Which pair of numbers has a GCF of 5?

10 and 25
30 and 40
45 and 9
50 and 25

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Which of these is NOT a factor of 20?

2
4
6
20

Tags

CCSS.4.OA.B.4

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Prime numbers have:

Exactly 2 factors
2 pairs of factors
More than 2 factors
1 factor

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Find the GCF of the pair of numbers: 60 and 72

12
6
2
18

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