GCF and LCM

GCF and LCM

Assessment

Assessment

Created by

Alderman

Mathematics

4th - 7th Grade

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12 questions

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1.

Multiple Choice

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

2.

Multiple Choice

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

1 min

1 pt

GCF of 27 and 70

3

5

7

10

4.

Multiple Choice

1 min

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

1 min

1 pt

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Which of these is NOT a factor of 20?

2

4

6

20

6.

Multiple Choice

1 min

1 pt

Prime numbers have:

Exactly 2 factors

2 pairs of factors

More than 2 factors

1 factor

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