Worksheetsexponents class 8 cbse ncert
Total questions: 42
Worksheet time: 1hrs 24mins
Name
Class
Date
1.
Write the following in expanded form.
103
103
a)
10+10+10
b)
10x10x10
c)
3x10
d)
1,000
2.
(2x3y)6
a)
2x18y6
b)
64x18y6
c)
64x3y6
d)
2x3y6
3.
Simplify (24)(25)
a)
220
b)
49
c)
420
d)
29
4.
Simplify (6x7)2
a)
12x14
b)
36x14
c)
6x14
d)
6x9
5.
Simplify (-7y2)(5y4)
a)
-35y6
b)
-2y6
c)
-35y8
d)
-2y8
6.
a)
13
b)
43
c)
11.6
d)
41.6
7.
40
a)
0
b)
1
c)
4
d)
-4
8.
Simplify the following expression:
xy-7
xy-7
a)
xy7
b)
x/y7
c)
x7/y
d)
x7y
9.
(ab8c)(a-17c10)
a)
a17b8c11
b)
a16b8c11
c)
(b8c11)/(a16)
d)
a-17b8c10
10.
a)
2a2b6
b)
1/2a2b6
c)
b6/2a2
d)
2b6/a2
11.
Simplify:
a)
x12/y22
b)
x8y14
c)
x12y22
d)
y22/x12
12.
Simplify:
a)
g15h24/f9
b)
f9/g15h24
c)
1/f9g15h24
13.
Simplify:
a)
243x20/y30
b)
15x20/y30
c)
3x20/y30
14.
Which expression has the largest value?
a)
62
b)
26
c)
110
d)
101
15.
Which expression is equivalent to 106?
a)
1,000,000
b)
60
c)
3,294,360
d)
600
16.
Which number is the BASE?
23 = 8
23 = 8
a)
2
b)
3
c)
8
d)
not here
17.
What operation do you use with exponents?
a)
addition
b)
subtraction
c)
multiplication
d)
division
18.
What is the exponent form for
6?
6?
a)
60
b)
61
c)
6×1
d)
0
19.
(-5)3
a)
-15
b)
125
c)
-125
d)
-625
20.
Simplify
x4⋅x3⋅x
x4⋅x3⋅x
a)
x8
b)
x12
c)
x7
d)
x10
21.
Simplify
a)
y2
b)
y35
c)
y12
d)
y14
22.
Simplify
a)
x12
b)
x17
c)
x6
d)
x23
23.
Simplify
a)
z
b)
z12
c)
1
d)
z14
24.
Simplify
a)
z15
b)
z8
c)
z3
d)
z11
25.
Simplify
a)
1
b)
x2
c)
x18
d)
x11
26.
Simplify
a)
x4
b)
x6
c)
x29
d)
x20
27.
(xy)3⋅x2⋅y5
a)
x8y5
b)
x3y6
c)
x5y8
d)
x6y5
28.
Simplify
a)
x4/3
b)
3x10
c)
36x10
d)
3x4
29.
Simplify
a)
75x6
b)
3x2
c)
75x2
d)
20x6
30.
Simplify
a)
w24y9
b)
w11y6
c)
y3/w6
d)
w6/y3
31.
According to exponent rules, when we multiply powers we _______ the exponents.
a)
add
b)
subtract
c)
multiply
d)
divide
32.
According to exponent rules, when we divide powers we _______ the exponents.
a)
add
b)
subtract
c)
multiply
d)
divide
33.
What is an exponent?
a)
repeated multiplication
b)
repeated addition
c)
repeated subtraction
d)
repeated division
34.
What is (0.2)3
a)
8
b)
.8
c)
.08
d)
.008
35.
What is (-6)4
a)
-1296
b)
1296
c)
24
d)
-24
36.
Simplify. Express using exponents.
a)
11m4n5
b)
16m4n6
c)
24m4n5
d)
24m4n6
37.
Simplify. Express using exponents.
a)
12x6y4
b)
12x10y6
c)
22x10y6
d)
12x6y6
38.
Which is greater, 26540 or 50?
a)
26540
b)
50
c)
They are the same
d)
Zero is greater
39.
a)
a8b13
b)
a2b7
c)
a15b30
40.
a)
3b6
b)
6b6
c)
3b3
d)
6b3
41.
Simplify.
a)
y60
b)
1/y16
c)
y-16
d)
y4
42.
Are these two equivalent:
22 = (-2)2
a)
Yes
b)
No
100 %
