Name: 
 

LCM



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

Find the least common multiple (LCM) of 7, 10, and 20.
A
200
B
140
C
20
D
70
 

 2. 

Find the least common multiple (LCM) of 2, 8, and 12.
A
96
B
16
C
12
D
24
 

 3. 

Find the least common multiple (LCM) of 6, 7, and 8.
A
50
B
168
C
21
D
12
 

 4. 

Find the least common multiple (LCM) of 3, 5, and 6.
A
12
B
30
C
19
D
10
 

 5. 

Lauren visits the park every 3 days and goes to the library every 10 days. If Lauren does both of these today, how many days will pass before Lauren gets to do them both on the same day again?
A
13 days
B
60 days
C
30 days
D
7 days
 

 6. 

The difference between two numbers is 5. The LCM of the two numbers is 24. Find the two numbers.
A
8 and 9
B
5 and 8
C
8 and 13
D
3 and 8
 

 7. 

Yolanda writes an email to her best friend in Oregon every day, an email to her brother every 3 days, and a letter to her cousin every 5 days. On March 10, she writes to all three of them. On what date will she next write to all three of them?
A
March 25
B
April 15
C
March 18
D
April 18
 

 8. 

Find the least common multiple (LCM) of 3 and 8.
A
3
C
11
B
8
D
24
 

 9. 

Find the least common multiple (LCM) of 4 and 18.
A
2
C
4
B
36
D
18
 

 10. 

Find the least common multiple (LCM) of 10 and 12.
A
10
C
60
B
120
D
2
 



 
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