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LCM/GCF Practice

Authored by Claudia Flores

Mathematics

5th - 6th Grade

CCSS covered

Used 36+ times

LCM/GCF Practice
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15 questions

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1.

FILL IN THE BLANK QUESTION

45 sec • 1 pt

To break down 2 numbers using prime factorization trees and find what they have in common is ...

(a)  

2.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

To find the least common multiple, LCM, you can:

use prime numbers

skip count

use the times table chart

subtract by 10

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the LCM of 12 and 10 (skip count)?

40

2

60

120

4.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

What is the prime factorization of 30 (tree)?

2 x 15

1 x 30

3 x 15

2 x 3 x 5

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the GCF of 12 and 10 (prime factorization tree)?

10

2

6

5

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the least common multiple (LCM) of 8 and 5?

50

40

5

8

7.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

What is the prime factorization of 42 (tree)?

2 x 28

1 x 42

2 x 3 x 7

6 x 7

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