EduSahara™ Worksheet
Name : Chapter Based Worksheet
Chapter : Exponents and Powers
Grade : CBSE Grade VII
License : Non Commercial Use
Question
1
1.
(
w
3
)
7
=
(i)
w
3
(ii)
w
4
(iii)
7
w
3
(iv)
w
10
(v)
w
21
Question
2
2.
Find the exponential notation of
3
✕
3
✕
3
✕
3
✕
3
(i)
6
5
(ii)
3
6
(iii)
3
3
(iv)
3
5
(v)
3
4
Question
3
3.
Simplify the expression
(-6)
-3
✕
(-6)
-6
✕
(-6)
-7
(i)
(-6)
-16
(ii)
(-6)
-17
(iii)
(-4)
-16
(iv)
(-8)
-16
(v)
(-6)
-15
Question
4
4.
Simplify the expression
6
7
✕
6
7
✕
6
6
(i)
6
20
(ii)
6
19
(iii)
6
21
(iv)
9
20
(v)
4
20
Question
5
5.
The value of
-2
(
2
3
)
÷
-3
(
1
3
)
(i)
12
-1
(ii)
15
-1
(iii)
12
-2
(iv)
10
-1
(v)
13
-1
Question
6
6.
7
(
5
2
)
=
(i)
5
6
2
7
(ii)
5
7
2
7
(iii)
5
8
2
7
(iv)
5
7
5
7
(v)
5
7
(-1)
7
Question
7
7.
The value of
(-3)
-2
✕
(-2)
-3
(i)
2
(
-1
72
)
(ii)
1
72
(iii)
(
-1
70
)
(iv)
(
-1
24
)
(v)
(
-1
72
)
Question
8
8.
The expanded form of
(
1
4
g
)
3
is
(i)
1
4
g
✕
1
4
g
✕
1
4
g
✕
1
4
g
(ii)
1
4
g
(iii)
1
4
g
✕
1
4
g
✕
1
4
g
(iv)
1
4
g
✕
1
4
g
✕
1
4
g
✕
1
4
g
✕
1
4
g
(v)
1
4
g
✕
1
4
g
Question
9
9.
The
exponent
in the term
(
5
3
)
2
is
(i)
-2
(ii)
2
(iii)
(
-5
3
)
(iv)
5
3
(v)
1
Question
10
10.
Simplify the expression
-3
(
-7
9
)
✕
-3
(
-7
9
)
(i)
-6
(
-7
9
)
(ii)
-7
(
-7
9
)
(iii)
-6
(
-5
9
)
(iv)
(-1)
-6
(v)
-5
(
-7
9
)
Question
11
11.
Find the exponential notation of
(
-625
12
)
(i)
-1
✕
5
4
2
2
✕
1
(ii)
-1
✕
5
3
2
2
✕
3
(iii)
-1
✕
5
4
2
2
✕
6
(iv)
(-1)
2
✕
5
4
2
2
✕
3
(v)
-1
✕
5
4
2
2
✕
3
Question
12
12.
Represent the given large number in scientific form
227323900
(i)
2.273239
✕
10
8
(ii)
2.273239
✕
10
6
(iii)
2.273239
✕
10
9
(iv)
2.273239
✕
10
10
(v)
2.273239
✕
10
7
Question
13
13.
The value of
3
(
-1
3
)
✕
2
(
-1
2
)
(i)
(
-1
36
)
(ii)
2
(
-1
108
)
(iii)
(
-1
106
)
(iv)
(
-1
108
)
(v)
1
108
Question
14
14.
(-9)
-9
(-9)
7
=
(i)
(-9)
-17
(ii)
(-12)
-16
(iii)
(-6)
-16
(iv)
(-9)
-15
(v)
(-9)
-16
Question
15
15.
The value of
3
-2
+
(-2)
-2
(i)
2
(
13
36
)
(ii)
5
12
(iii)
13
36
(iv)
13
34
(v)
11
36
Question
16
16.
−
5
t
6
.
−
3
t
(-3)
.
−
4
t
2
=
(i)
−
60
t
5
(ii)
5
t
(-60)
(iii)
−
12
t
5
(iv)
−
60
t
(-36)
(v)
−
12
t
(-36)
Question
17
17.
The value of
2
(
-4
3
)
+
3
(
5
2
)
(i)
1253
72
(ii)
1255
72
(iii)
139
8
(iv)
2
(
1253
72
)
(v)
179
10
Question
18
18.
x
12
x
6
=
(i)
x
72
(ii)
12
x
6
(iii)
x
6
(iv)
x
18
(v)
6
x
6
Question
19
19.
Write the given number in usual form
-3.715425
✕
10
7
(i)
-3715425
(ii)
-3715425000
(iii)
-37154250
(iv)
-371542.5
(v)
-371542500
Question
20
20.
The
base
in the term
4
3
is
(i)
-4
(ii)
4
(iii)
-3
(iv)
3
(v)
2
Question
21
21.
2
s
8
.
8
s
4
.
6
s
5
.
5
s
7
=
(i)
80
s
224
(ii)
15
s
224
(iii)
480
s
24
(iv)
17
s
80
(v)
15
s
17
Question
22
22.
Simplify the expression
(-8)
6
✕
(-8)
5
(i)
(-8)
12
(ii)
(-10)
11
(iii)
(-8)
11
(iv)
(-8)
10
(v)
(-6)
11
Question
23
23.
(
3
6
✕
9
9
)
5
=
(i)
3
6
✕
9
9
(ii)
3
45
✕
9
30
(iii)
3
6
✕
9
45
(iv)
3
30
✕
9
9
(v)
3
30
✕
9
45
Question
24
24.
Simplify the expression
6
-4
✕
6
-4
✕
6
-4
(i)
6
-11
(ii)
6
-12
(iii)
8
-12
(iv)
6
-13
(v)
3
-12
Question
25
25.
Expand the following base power
3
5
(i)
81
(ii)
3125
(iii)
243
(iv)
27
(v)
729
Assignment Key
1) (v)
2) (iv)
3) (i)
4) (i)
5) (i)
6) (ii)
7) (v)
8) (iii)
9) (iv)
10) (i)
11) (v)
12) (i)
13) (iv)
14) (v)
15) (iii)
16) (i)
17) (i)
18) (iii)
19) (iii)
20) (ii)
21) (iii)
22) (iii)
23) (v)
24) (ii)
25) (iii)
