WorksheetsLCM and GCF
Total questions: 17
Worksheet time: 1hrs 1mins
Name
Class
Date
1.
What is the GCF of 18 and 24?
a)
3
b)
6
c)
8
d)
9
2.
Find the LCM of 8 and 12.
a)
24
b)
5
c)
16
d)
48
3.
Find the LCM of 14 and 4.
a)
12
b)
4
c)
24
d)
28
4.
What is the least common multiple (LCM) of 15 and 5?
a)
5
b)
3
c)
15
d)
75
5.
Find the Greatest Common Factor (GCF) OF 32 and 64.
a)
1
b)
2
c)
4
d)
32
6.
Find the Greatest Common Factor (GCF) of 12 & 27
a)
1
b)
3
c)
9
d)
12
7.
Find the Greatest Common Factor (GCF) OF 12, 18 & 30
a)
1
b)
3
c)
6
d)
12
8.
Karen has 30 photos from a trip to Dallas and 48 photos from a trip to Austin. She wants to put all the photos in an album so that the photos from each trip are in separate sections. What is the greatest number of photos she can put on each page?
a)
18 photos
b)
6 photos
c)
240 photos
9.
Morgan and her little brother receive stickers for doing their assignments at home each week. Morgan has 14 assignments due each week and her brother, Willie, has 8 assignments due. What is the lowest number of stickers each sibling will have?
a)
16
b)
56
c)
2
10.
In Science class, Mrs. Rollins told her class that the planets revolve around the Sun at different times. It takes Jupiter 12 "Earth years" , and Saturn takes 30 "Earth years". How often will Jupiter and Saturn align? (LCM)
a)
24
b)
60
c)
360
11.
At the movie theater, they give out a free drink to every 75th customer and a free bag of popcorn to every 30th customer. Who is the first customer that is going to win both free items?
a)
16th customer
b)
150th customer
c)
300th customer
d)
180th customer
12.
What is the GCF of 15 and 25
a)
1, 3, 5, 15
b)
25
c)
5
d)
375
13.
Miss Friedman is watching two tik toks at once. One tik tok is only 4 seconds long. The second tik tok is 6 seconds long. When is the next time the videos will end at the same time?
a)
12 seconds
b)
16 seconds
c)
24 seconds
d)
1, 2, 3, 4, 6
14.
What is the LCM of 12 and 10
a)
120
b)
50
c)
60
15.
Which pair of numbers has a LCM of 20?
a)
4 and 5
b)
2 and 10
c)
5 and 10
16.
Which pair of numbers has a GCF of 10 AND a LCM of 60?
a)
2 and 5
b)
20 and 30
c)
5 and 10
d)
15 and 20
17.
Lisa is making activity baskets to donate to charity. She has 12 coloring books and 36 crayons. What is the greatest number of baskets she can make if each type of toy is equally distributed among the baskets?
a)
2
b)
12
c)
36
d)
6
100 %
