GCF/LCM Review
Name ______________________________________
1) Which is a factor of 49?
A. 2
B. 3
C. 11
D. 98
7) What is the greatest common factor of 15, 75, and
150?
A. 5
B. 15
C. 30
D. 150
2) Which set of numbers contains all of the factors of
24?
A. 0,1,2,3,4,6,8,9
B. 2,3,4,6,8,12,24
C. 1,2,3,4,6,8, 12, 24
D. 24,48,72,96
3) Which is a prime factor of 35?
A. 2
B. 7
C. 11
D. 3
4) What is the correct prime factorization of 64?
A. 8 x 32
B. 23
C. 26
D. 23 x 8
5) What is the correct prime factorization of 175?
A. 3 x 3 x 5
B. 3 x 3 x 7
C. 3 x 5 x 7
D. 5 x 5 x 7
6) What is the least common multiple of 9, 12, and 36?
A. 36
B. 72
C. 108
D. 1,440
8) What are the greatest common factor and least
common multiple of 15 and 30?
A. 5, 30
B. 5, 60
C. 15, 30
D. 15, 60
9) What common denominator should be used
to add these fractions?
3 5 1
, ,
5 6 2
A. 6
B. 12
C. 24
D. 30
10) Which value is the least common multiple of the
following set of numbers?
2, 3, 8, 9
A. 36
B. 45
C. 72
D. 144
MIXED REVIEW
15) Divide:
11) In a shipment of 30 light bulbs, 3 light bulbs were
broken. What percent of the light bulbs were
broken?
A. 9%
B. 10%
C. 30%
D. 90%
13) What is the proper equation to solve the written
statement below?
Three more than a number is 18.
A. x = 18
B. 3x = 18
C. x = 3 + 18
D. x + 3 = 18
14) Multiply:
(a)
(b)
(c)
(d)
1
5
7
8
5
18
10
18
5
12
𝑥
2
3
=
4
÷ =
5
3
(a) 1 8
4
(b) 1 15
9
(c) 1 10
1
(d) 1 8
16) Divide:
12) Tarik left a 22% tip for the waitress who served
his family. The meal cost $82.50. How much tip
did Tarik leave?
A. $7.50
B. $8.50
C. $10.50
D. $31.00
9
10
(a)
(b)
1
24 ÷ 4 =
9
12
9
16
(c) 1
(d) 9
Use the number line below to answer the following
questions.
17) Which point on the number line represents 4.25?
(a) A
(b) B
(c) C
(d) D
18) Which point on the number line represents
(a)
(b)
(c)
(d)
E
F
G
H
39
?
4