Name: 
 

Least Common Multiple and Greatest Common Factor, Quiz


Multiple Choice
Identify the choice that best completes the statement or answers the question.
 
 
Find the LCM of the numbers.
 

 1. 
7, 11, 21
A
231
B
77
C
1,617
D
462
 

 2. 
4, 11, 20
A
880
B
440
C
44
D
220
 

 3. 
Find the LCM of 10 and 20.
A
200
B
10
C
20
D
30
 

 4. 
Find the LCM of 30 and 22.
A
2
B
660
C
52
D
330
 

 5. 
Find the GCF of 55 and 88.
A
33
B
55
C
440
D
11
 

 6. 
Find the GCF of 22 and 80.
A
3
B
2
C
1
D
4
 

 7. 
Find the GCF (greatest common factor) of 320 and 380.
A
19
C
40
B
20
D
16
 

 8. 
Jim works in the shipping department for a toy store. Every 10 weeks he receives
a shipment of games. Every 25 weeks he receives a shipment of bicycles. If
Jim received a shipment of both the games and the bicycles today, when is the
next time both toys will arrive on the same day?
A
50 weeks
C
8 weeks
B
20 weeks
D
125 weeks
 

 9. 
Lou is making bead necklaces. She has 36 green beads and 84 blue beads.  What is the greatest number of identical necklaces (each with the same number of each color bead)  she can make if she wants to use all of the beads?
A
12
C
11
B
13
D
252
 

 10. 
Erica, Ariel, and Jaclyn each picked flowers in a meadow. Erica picked 49 flowers,
Ariel picked 14 flowers, and Jaclyn picked 28 flowers. If the girls are going to divide
each group of flowers evenly among the vases, what is the greatest number of
vases they can fill?
A
9
C
7
B
2
D
8
 



 
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