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Least Common Multiple and Greatest Common Factor, Homework


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

 1. 
9, 11, 36
A
3,564
B
99
C
792
D
396
 

 2. 
7, 11, 28
A
77
B
616
C
308
D
2,156
 

 3. 
Find the LCM of 30 and 18.
A
6
B
90
C
540
D
48
 

 4. 
Find the LCM of 50 and 30.
A
10
B
80
C
150
D
1,500
 

 5. 
Find the GCF of 33 and 88.
A
264
B
55
C
11
D
33
 

 6. 
Find the GCF of 20 and 30.
A
11
B
5
C
10
D
20
 

 7. 
Find the GCF (greatest common factor) of 154 and 168.
A
28
C
11
B
12
D
14
 

 8. 
Tim works in the shipping department for a toy store. Every 6 weeks he receives
a shipment of games. Every 9 weeks he receives a shipment of bicycles. If
Tim 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
18 weeks
C
8 weeks
B
12 weeks
D
27 weeks
 

 9. 
Sue is making bead necklaces. She has 39 green beads and 91 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
13
C
12
B
14
D
273
 

 10. 
Erica, Ariel, and Jaclyn each picked flowers in a meadow. Erica picked 9 flowers,
Ariel picked 15 flowers, and Jaclyn picked 75 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
8
C
3
B
5
D
9
 



 
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