EduSahara™ Worksheet
Name : Chapter Based Worksheet
Chapter : Exponents and Powers
Grade : CBSE Grade VII
License : Non Commercial Use
Question
1
1.
The value of
4
-3
+
3
-2
(i)
71
576
(ii)
2
(
73
576
)
(iii)
73
574
(iv)
25
192
(v)
73
576
Question
2
2.
Simplify
(-2)
-3
✕
(-4)
2
2
2
✕
(-2)
3
(i)
4
-4
(ii)
(-1)
-4
(iii)
2
-5
(iv)
2
-4
(v)
2
-3
Question
3
3.
The value of
-3
(
-4
3
)
+
-2
(
-3
2
)
(i)
5
192
(ii)
2
(
13
576
)
(iii)
13
574
(iv)
11
576
(v)
13
576
Question
4
4.
Find the value of
(-5)
4
(i)
624
(ii)
627
(iii)
625
(iv)
623
(v)
626
Question
5
5.
Simplify the expression
-4
(
5
3
)
✕
-5
(
5
3
)
(i)
-9
(
5
3
)
(ii)
-8
(
5
3
)
(iii)
-10
(
5
3
)
(iv)
1
(v)
-9
(
7
3
)
Question
6
6.
Represent the given small number in standard form
-8.574899
✕
10
-7
(i)
-8.574899
✕
10
-6
(ii)
-8.574899
✕
10
-5
(iii)
-8.574899
✕
10
-9
(iv)
-8.574899
✕
10
-7
(v)
-8.574899
✕
10
-8
Question
7
7.
Simplify
4
3
✕
5
2
✕
3
3
3
3
✕
(-4)
3
✕
4
3
✕
(-3)
3
(i)
2
6
✕
3
4
✕
5
2
2
12
✕
3
6
(ii)
2
6
✕
3
2
✕
5
2
2
12
✕
3
6
(iii)
2
6
✕
3
3
✕
5
2
2
12
✕
3
6
(iv)
2
6
✕
3
3
✕
5
2
2
12
✕
5
6
(v)
2
6
✕
3
3
✕
5
2
2
12
✕
3
3
Question
8
8.
Represent the given small number in scientific form
0.2503184
(i)
2.503184
(ii)
2.503184
✕
10
(iii)
2.503184
✕
10
-3
(iv)
2.503184
✕
10
-2
(v)
2.503184
✕
10
-1
Question
9
9.
(
i
15
i
)
6
=
(i)
i
(
15
i
+
6
)
(ii)
i
15
i
(iii)
i
90
i
(iv)
6
i
90
i
Question
10
10.
Find the exponential notation of
(
-336
25
)
(i)
-2
✕
2
4
✕
3
✕
7
5
2
(ii)
-1
✕
2
4
✕
3
✕
7
7
2
(iii)
-1
✕
2
5
✕
3
✕
7
5
2
(iv)
-1
✕
2
4
✕
3
✕
7
5
2
(v)
-1
✕
2
4
✕
3
✕
7
3
2
Question
11
11.
5
-8
=
(i)
8
(
1
5
)
(ii)
8
(
3
5
)
(iii)
7
(
1
5
)
(iv)
9
(
1
5
)
(v)
8
(
-1
5
)
Question
12
12.
[
(
8
3
)
5
✕
(
8
6
)
4
]
÷
8
39
(i)
0
(ii)
1
(iii)
8
(iv)
3
(v)
2
Question
13
13.
(
p
9
p
2
)
3
=
(i)
p
9
(ii)
p
2
(iii)
p
21
(iv)
3
p
21
(v)
p
11
Question
14
14.
-1
5
=
(i)
undefined
(ii)
∞
(iii)
0
(iv)
-1
(v)
1
Question
15
15.
Which of the following statements are true?
a)
x
m
x
n
=
x
m
n
b)
(
x
m
)
n
=
(
x
n
)
m
c)
a
m
.
a
n
=
a
m
n
d)
(
x
m
)
n
=
x
(
m
+
n
)
e)
a
.
x
m
=
a
m
.
x
m
f)
a
0
=
1
(
a
≠
0)
(i)
{a,f,b}
(ii)
{a,b}
(iii)
{d,e,b}
(iv)
{b,f}
(v)
{c,f}
Question
16
16.
4
(
5
4
)
=
(i)
-4
(
2
5
)
(ii)
-5
(
4
5
)
(iii)
-4
(
4
5
)
(iv)
-3
(
4
5
)
(v)
-4
(
6
5
)
Question
17
17.
-4
(
8
5
)
=
(i)
8
-4
8
-4
(ii)
8
-4
5
-4
(iii)
8
-3
5
-4
(iv)
8
-4
2
-4
(v)
8
-5
5
-4
Question
18
18.
(
7
9
m
n
o
)
✕
(
9
n
10
o
6
)
✕
(
−
1
8
o
5
)
=
(i)
9
64
n
15
o
17
(ii)
−
7
8
m
n
16
o
13
(iii)
−
7
8
m
n
11
o
12
(iv)
7
576
o
12
m
n
6
(v)
7
m
n
11
o
7
Question
19
19.
Simplify the expression
-4
(
8
7
)
✕
-4
(
9
5
)
✕
-4
(
4
3
)
(i)
-3
(
96
35
)
(ii)
-5
(
96
35
)
(iii)
-4
(
96
35
)
(iv)
-4
(
94
35
)
(v)
-4
(
14
5
)
Question
20
20.
Write the given number in usual form
8.361759
✕
10
7
(i)
836175900
(ii)
8361759
(iii)
83617590
(iv)
8361759000
(v)
836175.90000000002328
Question
21
21.
[
-2
(
2
5
)
✕
-2
(
4
7
)
]
÷
[
2
(
5
2
)
✕
2
(
7
4
)
]
=
(i)
0
(ii)
4
7
(iii)
2
5
(iv)
(-1)
(v)
1
Question
22
22.
The value of
2
(
5
2
)
÷
3
(
-5
3
)
(i)
(
-5
4
)
(ii)
(
-27
20
)
(iii)
(
-29
20
)
(iv)
(
-3
2
)
(v)
2
(
-27
20
)
Question
23
23.
Represent the given large number in scientific form
-923177300
(i)
-9.231773
✕
10
8
(ii)
-9.231773
✕
10
7
(iii)
-9.231773
✕
10
10
(iv)
-9.231773
✕
10
6
(v)
-9.231773
✕
10
9
Question
24
24.
(
b
2
)
(
c
+
5
)
=
(i)
b
(
2
c
−
10
)
(ii)
b
(
c
+
9
)
(iii)
b
(
2
c
+
10
)
(iv)
b
(
c
+
12
)
(v)
b
(
2
c
+
7
)
Question
25
25.
Find the exponential notation of
(
-2
15
)
(i)
-1
✕
2
3
✕
5
(ii)
-1
✕
2
5
✕
5
(iii)
-1
✕
1
3
✕
5
(iv)
-1
✕
2
2
3
✕
5
(v)
-1
✕
2
3
✕
2
Assignment Key
1) (v)
2) (iv)
3) (v)
4) (iii)
5) (i)
6) (iv)
7) (iii)
8) (v)
9) (iii)
10) (iv)
11) (i)
12) (ii)
13) (iii)
14) (iv)
15) (iv)
16) (iii)
17) (ii)
18) (iii)
19) (iii)
20) (iii)
21) (v)
22) (ii)
23) (i)
24) (iii)
25) (i)
