EduSahara™ Worksheet
Name : Chapter Based Worksheet
Chapter : Exponents and Powers
Grade : CBSE Grade VII
License : Non Commercial Use
Question
1
1.
Simplify the expression
-6
(
7
4
)
✕
-3
(
7
4
)
✕
-3
(
7
4
)
(i)
-13
(
7
4
)
(ii)
-12
(
9
4
)
(iii)
-11
(
7
4
)
(iv)
-12
(
7
4
)
(v)
-12
(
5
4
)
Question
2
2.
The value of
4
3
÷
4
3
(i)
3
-1
(ii)
(-2)
-1
(iii)
2
-1
(iv)
1
Question
3
3.
−
4
i
3
.
−
8
i
(-3)
=
(i)
32
(ii)
−
12
i
(-9)
(iii)
−
12
(iv)
32
i
(-9)
(v)
0
Question
4
4.
Simplify the expression
(-4)
2
✕
(-4)
3
(i)
(-2)
5
(ii)
(-4)
4
(iii)
(-4)
5
(iv)
(-4)
6
(v)
(-7)
5
Question
5
5.
28
✕
p
✕
p
✕
p
=
(i)
31
p
3
(ii)
28
p
4
(iii)
26
p
3
(iv)
28
p
2
(v)
28
p
3
Question
6
6.
Simplify
2
2
✕
(-5)
2
(-2)
2
✕
(-5)
3
(i)
-1
✕
2
5
(ii)
-1
✕
1
8
(iii)
-2
✕
1
5
(iv)
-1
✕
1
3
(v)
-1
✕
1
5
Question
7
7.
Find the exponential notation of
-7
✕
-7
✕
-7
✕
-7
✕
-7
✕
-7
(i)
(-7)
6
(ii)
(-7)
7
(iii)
(-7)
5
(iv)
(-5)
6
(v)
(-10)
6
Question
8
8.
The value of
3
(
5
3
)
÷
2
(
5
2
)
(i)
22
27
(ii)
4
5
(iii)
20
27
(iv)
2
(
20
27
)
(v)
2
3
Question
9
9.
4
(
5
2
)
=
(i)
-3
(
2
5
)
(ii)
-5
(
2
5
)
(iii)
-4
(
2
5
)
(iv)
-4
(
4
5
)
(v)
-6
(
2
5
)
Question
10
10.
(
r
20
r
9
)
3
=
(i)
r
33
(ii)
3
r
29
(iii)
r
87
(iv)
3
r
11
(v)
r
540
Question
11
11.
16
✕
c
✕
c
✕
d
✕
d
✕
e
✕
e
✕
e
✕
e
=
(i)
13
c
2
d
2
e
4
(ii)
16
c
3
d
2
e
4
(iii)
16
c
d
2
e
4
(iv)
16
c
2
d
2
e
4
(v)
19
c
2
d
2
e
4
Question
12
12.
The
base
in the term
8
2
is
(i)
-8
(ii)
2
(iii)
5
(iv)
-2
(v)
8
Question
13
13.
(
(
-2
5
)
✕
2
1
✕
6
1
)
-9
=
(i)
-9
(
-2
5
)
✕
2
-10
✕
6
-10
(ii)
-9
(
-2
5
)
✕
2
-9
✕
6
-9
(iii)
-9
(
-2
5
)
✕
2
-8
✕
6
-8
(iv)
-9
(
-2
5
)
✕
5
-9
✕
9
-9
(v)
-9
(
-2
5
)
✕
2
-11
✕
4
-9
Question
14
14.
Simplify the expression
(-3)
6
✕
(-3)
6
✕
(-3)
6
(i)
(-3)
20
(ii)
(-6)
18
(iii)
(-3)
19
(iv)
(-3)
18
(v)
(-3)
17
Question
15
15.
(
6
✕
-7
)
4
=
(i)
6
4
✕
(-9)
4
(ii)
6
4
✕
(-7)
5
(iii)
6
4
✕
(-7)
4
(iv)
6
4
✕
(-7)
3
(v)
6
4
✕
(-5)
4
Question
16
16.
Find the exponential notation of
1
5
(i)
1
3
(ii)
0
5
(iii)
1
5
(iv)
2
5
(v)
1
8
Question
17
17.
The value of
-3
(
2
3
)
+
-3
(
5
3
)
(i)
3591
1000
(ii)
3591
998
(iii)
2
(
3591
1000
)
(iv)
3589
1000
(v)
3593
1000
Question
18
18.
Find the exponential notation of
-14
✕
-14
✕
-14
(i)
(-14)
3
(ii)
(-14)
4
(iii)
(-12)
3
(iv)
(-16)
3
(v)
(-14)
2
Question
19
19.
(
5
✕
-7
✕
-2
)
-5
=
(i)
5
-5
✕
(-4)
-5
✕
(-2)
-3
(ii)
5
-5
✕
(-7)
-6
✕
(-2)
-6
(iii)
5
-5
✕
(-7)
-5
✕
(-2)
-5
(iv)
5
-5
✕
(-10)
-5
✕
(-5)
-5
(v)
5
-5
✕
(-7)
-4
✕
(-2)
-4
Question
20
20.
Simplify
(-2)
-2
✕
(-2)
-3
✕
4
-2
✕
4
-2
5
-3
✕
(-5)
-3
✕
(-2)
-3
(i)
-1
✕
5
6
5
10
(ii)
(-1)
2
✕
5
6
2
10
(iii)
-1
✕
5
6
2
8
(iv)
-2
✕
5
6
2
10
(v)
-1
✕
5
6
2
10
Question
21
21.
(
−
2
n
2
o
6
)
3
=
(i)
−
6
n
5
o
9
(ii)
−
6
n
6
o
18
(iii)
−
2
n
6
o
18
(iv)
−
8
n
6
o
18
(v)
−
8
n
5
o
9
Question
22
22.
Simplify the expression
(-5)
-2
✕
(-4)
-2
(i)
22
-2
(ii)
20
-2
(iii)
18
-2
(iv)
20
-3
(v)
20
-1
Question
23
23.
Find the value of
(
5
4
)
81
(i)
245
(ii)
241
(iii)
244
(iv)
242
(v)
243
Question
24
24.
Expand the following base power
2
-4
(i)
1
625
(ii)
1
(iii)
1
16
(iv)
1
8
(v)
1
32
Question
25
25.
The value of
3
3
+
(-2)
2
(i)
31
2
(ii)
31
(iii)
34
(iv)
30
(v)
28
Assignment Key
1) (iv)
2) (iv)
3) (i)
4) (iii)
5) (v)
6) (v)
7) (i)
8) (iii)
9) (iii)
10) (i)
11) (iv)
12) (v)
13) (ii)
14) (iv)
15) (iii)
16) (iii)
17) (i)
18) (i)
19) (iii)
20) (v)
21) (iv)
22) (ii)
23) (v)
24) (iii)
25) (ii)
