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Worksheets8th Grade Computation Skills 17 & 18 Review Problems
Total questions: 56
Worksheet time: 2hrs 52mins
Name
Class
Date
1.
15.07 - 12.2=
a)
2.87
b)
1.87
c)
3.87
d)
2.80
2.
91.55 + 7.6=
a)
99.15
b)
98.15
c)
99.10
d)
98.1
3.
6.0 - 2.215
a)
3.795
b)
3.785
c)
3.885
d)
3.875
4.
2 1/4 + 3 2/12
a)
5 3/4
b)
5 5/12
c)
5 3/12
d)
5 2/4
5.
Solve.
a)
148/160
b)
88/160
c)
14/80
d)
7/40
6.
Solve.
a)
7 8/48
b)
2 13/24
c)
3 1/3
d)
None of the above
7.
Solve. (148.7)(3.4)
a)
507.8
b)
444.1
c)
505.58
d)
605.61
8.
4 x 0.03
a)
12
b)
0.12
c)
120
d)
0.012
9.
11.3 × 2.5
a)
79.1
b)
13.8
c)
22.597
d)
28.25
10.
Find the quotient for this division problem: 0.48 ÷ .02
a)
0.24
b)
0.0096
c)
0.46
d)
24
11.
Solve.
1.47 ÷ 0.32
a)
4.59375
b)
4.59
c)
4.594
d)
4.5948
12.
.
a)
88/60
b)
48/110
c)
24/55
13.
a)
187/48
b)
22/25
c)
44/51
d)
88/102
14.
6/11 x 5/6 (simplify if needed)
a)
15/33
b)
30/66
c)
11/17
d)
5/11
15.
3 3/4 x 2 2/5 =
a)
1 9/16
b)
6 3/10
c)
6 3/20
d)
9
16.
a)
11 3/4
b)
10 2/36
c)
47/4
d)
423/36
17.
-15 + 6 x 8 ÷ 4
a)
12
b)
-14
c)
-3
d)
-18
18.
( 15 x 3 - 43) ÷ 32
a)
1/16
b)
0.0745
c)
1/20
d)
None of the above.
19.
-(81÷ 3) - 15
a)
-24
b)
-42
c)
12
d)
None of the above
20.
GCF of 24 and 56
a)
2
b)
4
c)
6
d)
8
21.
Find the GCF of 45 and 60
a)
5
b)
15
c)
10
d)
9
22.
Find the GCF of 64 and 144
a)
8
b)
6
c)
16
d)
2
23.
What is the GCF of 18k and 15k3
a)
3k2
b)
3k3
c)
3k
d)
5k
24.
What is the GCF of 10a2b3 and 20a2b2?
a)
20a2b3
b)
10a2b3
c)
20ab2
d)
10a2b2
25.
What is the LCM of 10a2b3 and 20a2b2?
a)
20a2b3
b)
10a2b3
c)
20ab2
d)
10a2b2
26.
What is the LCM of 18k and 15k3
a)
270k3
b)
90k3
c)
3k
d)
5k
27.
Insert the correct digit to make the following number divisible by 3.
60__2
60__2
a)
1
b)
2
c)
3
d)
5
28.
How do you know if a number is divisible by 3?
a)
If the sum of the digits is a multiple of 3
b)
If it ends in 3, 6, or 9
c)
If it is an even number
d)
If it ends in 0 or 5
29.
The divisibility rule for 9 is...
a)
Divide the whole thing by nine
b)
Add the digits together. If the sum is divisible by 9, the original number is divisible by 9
c)
Multiply the digits together by 9
d)
Add the digits together and then add 9.
30.
The number 70,110 is divisible by...
a)
2, 3, 4, 5, 6, 9, 10
b)
2, 3, 4, 5, 6, 8, 9, 10
c)
2, 3, 5, 6, 9, 10
d)
2, 3, 5, 9, 10
31.
Which of these numbers is divisible by 2 AND 5?
a)
675
b)
674
c)
670
d)
673
32.
Which of these numbers is NOT odd?
a)
871
b)
929
c)
640
d)
737
33.
Evaluate the expression:
50 - 16 x 2 ÷ (12-4)
50 - 16 x 2 ÷ (12-4)
a)
2.25
b)
8.5
c)
26
d)
46
34.
(2 + 7 - 1) ÷ 22
a)
16
b)
2
c)
72.25
d)
8.75
35.
Find the value of the expression.
8 x (24 - 3) + 8
8 x (24 - 3) + 8
a)
106
b)
112
c)
117
d)
155
36.
Which operation must be performed first?
52 + (9 - 1) ÷ 4 × 10 + 1
52 + (9 - 1) ÷ 4 × 10 + 1
a)
52
b)
9 - 1
c)
4 × 10
d)
10 + 1
37.
l 8 l + l -8 l
a)
0
b)
8
c)
16
d)
64
38.
l 12 l + ( 32 ÷ 4)
a)
20
b)
11
c)
-4
d)
4
39.
If a =- 4 & b = 6, what is
3a + 5b?
a)
42
b)
18
c)
44
d)
46
40.
If a= - 6 and b= - 7,find the value of
15-a-b
a)
28
b)
2
c)
4
41.
Solve if x = 3 , y= -2 and z =7
a)
-7/16
b)
1 1/12
c)
-4/7
d)
None of the above
42.
How many cars were sold on Saturday and Sunday?
a)
5
b)
3
c)
8
d)
10
43.
How many students had more than 6 candy bars?
a)
5
b)
2
c)
3
d)
1
44.
How many students were polled?
a)
5
b)
11
c)
10
d)
1/4
45.
How many frogs jumped more than 10 inches?
a)
11
b)
7
c)
5
d)
3
46.
Convert 160 in to ft.
a)
13 ⅓ ft.
b)
12 ft.
c)
1,920 ft.
d)
None of the above.
47.
74 gal. = ______ c
a)
1,184 c
b)
4.625 c
c)
592 c
d)
None of the above
48.
What is the percent form for 2 3/5?
a)
260%
b)
235%
c)
400%
d)
350%
49.
Write 76% as a fraction in simplest form.
a)
19/50
b)
19/25
c)
25/38
d)
38/50
50.
Write 13/20 as a percent
a)
13%
b)
20%
c)
65%
d)
26%
51.
Change this decimal to a percent.
0.528
0.528
a)
528%
b)
52.8%
c)
5.28%
d)
52%
52.
Write 7% as a decimal
a)
7.0
b)
0.7
c)
0.007
d)
0.07
53.
Which number is equivalent to 0.08?
a)
0.0008%
b)
0.08%
c)
80%
d)
8%
54.
Write 17% as a fraction
a)
17/100
b)
1/7
c)
17/10
d)
17
55.
What is 12.08 written as a mixed number?
a)
12 8/10
b)
12 4/5
c)
12 4/25
d)
12 2/25
56.
What is the fraction for 31%?
a)
3/10
b)
31/100
c)
31/1000
d)
31/10,000
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