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WorksheetsGrade-8 Unit-2 Revision
Total questions: 19
Worksheet time: 23mins
Name
Class
Date
1.
Mark ALL equivalent choices:
a)
-16
b)
1/42
c)
1/16
d)
-1/16
e)
(-4)2
2.
Mark ALL equivalent choices:
a)
932
b)
14
c)
94
d)
912
e)
98/94
3.
a)
516
b)
512
c)
54
d)
57
e)
53
4.
a)
(-5)10 / 235
b)
(-5)3 x 22
c)
(-5)7 / 212
d)
(-5)3 / 22
5.
7.4 x 10-6
a)
7,400,000
b)
0.0000074
c)
74,000,000
d)
0.00074
6.
0.0090413
a)
9 x 10-3
b)
904.13 x 10-5
c)
9.0413 x 10-3
d)
90413 x 10-7
7.
8,346,000,000
a)
8.3 x 109
b)
8.34 x 109
c)
8.346 x 109
d)
0.8346 x 109
8.
How many seconds (in scientific notation) are in 4 minutes?
a)
240
b)
240 x 101
c)
2.4 x 102
d)
1.2 x 102
9.
Which of the following in not a perfect square?
a)
49
b)
81
c)
111
d)
144
10.
What is the square root of 289?
a)
13
b)
140
c)
17
d)
18
11.
02
a)
2
b)
0
c)
1
d)
None of these
12.
The square root of 1440000 is
a)
12
b)
120
c)
1200
d)
120000
13.
Which of the following is not a pythagorean triplet
a)
6,8,10
b)
14,48,50
c)
16,63,65
d)
18,80,81
14.
What is -9 cubed?
(-9)3
a)
-729
b)
729
c)
27
d)
-27
15.
The number 1,000 is a...
a)
perfect square
b)
perfect cube
16.
Cube root of 8000 is
a)
2
b)
20
c)
200
17.
Cube of an odd number is
a)
An odd number
b)
An even number
c)
A prime number
d)
None of the above
18.
find the smallest number which must be divided to obtain the perfect cube of 704
a)
5
b)
2
c)
3
d)
11
19.
A perfect square is when a whole number is multiplied by itself?
a)
FALSE
b)
TRUE
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