EduSahara™ Assignment
Name : Base Power Expressions involving Variables
Chapter : Exponents
Grade : ICSE Grade VII
License : Non Commercial Use
Question
1
1.
5
b
5
.
7
b
2
=
(i)
12
b
7
(ii)
35
b
7
(iii)
12
b
10
(iv)
35
b
10
(v)
7
b
35
Question
2
2.
9
i
3
.
7
i
3
.
6
i
9
=
(i)
22
i
15
(ii)
378
i
15
(iii)
378
i
81
(iv)
22
i
81
(v)
15
i
378
Question
3
3.
4
j
8
.
2
j
8
.
3
j
3
.
6
j
2
=
(i)
12
j
128
(ii)
12
j
19
(iii)
144
j
21
(iv)
48
j
128
(v)
19
j
48
Question
4
4.
−
7
f
(-6)
.
−
4
f
(-4)
=
(i)
−
10
f
28
(ii)
28
f
(-10)
(iii)
−
11
f
(-10)
(iv)
−
11
f
24
(v)
28
f
24
Question
5
5.
−
6
u
(-6)
.
−
9
u
6
.
−
2
u
(-2)
=
(i)
−
108
u
72
(ii)
−
17
u
72
(iii)
−
2
u
(-108)
(iv)
−
17
u
(-2)
(v)
−
108
u
(-2)
Question
6
6.
−
2
m
8
.
−
3
m
(-5)
.
−
4
m
8
.
−
5
m
(-4)
=
(i)
−
10
m
160
(ii)
−
30
m
160
(iii)
−
10
m
11
(iv)
120
m
7
(v)
11
m
(-30)
Question
7
7.
Find the square root of
f
2
g
2
h
4
=
(i)
(
f
2
g
2
h
4
)
2
(ii)
1
f
2
g
2
h
4
(iii)
f
g
h
8
(iv)
f
g
h
2
(v)
f
g
h
16
Question
8
8.
7
r
(-7)
s
9
.
−
3
r
8
s
6
=
(i)
4
r
s
15
(ii)
21
r
s
3
(iii)
−
21
r
(-7)
s
9
(iv)
−
21
r
s
15
(v)
10
r
s
15
Question
9
9.
(
c
6
)
8
=
(i)
c
2
(ii)
c
48
(iii)
c
6
(iv)
8
c
6
(v)
c
14
Question
10
10.
c
14
c
4
=
(i)
c
10
(ii)
4
c
10
(iii)
c
18
(iv)
c
56
(v)
14
c
10
Question
11
11.
(
q
4
r
4
)
2
=
(i)
2
q
6
r
6
(ii)
q
6
r
6
(iii)
2
q
4
r
4
(iv)
q
8
r
8
(v)
2
q
8
r
8
Question
12
12.
(
−
5
u
4
v
2
)
3
=
(i)
−
15
u
7
v
5
(ii)
−
15
u
12
v
6
(iii)
−
125
u
7
v
5
(iv)
−
5
u
12
v
6
(v)
−
125
u
12
v
6
Question
13
13.
(
k
20
k
2
)
4
=
(i)
k
72
(ii)
k
88
(iii)
4
k
22
(iv)
4
k
18
(v)
k
160
Question
14
14.
(
r
7
s
2
t
7
)
9
=
(i)
(
r
63
s
18
t
16
)
(ii)
(
r
16
s
11
t
63
)
(iii)
(
r
63
s
18
t
63
)
(iv)
(
r
16
s
11
t
16
)
(v)
(
9
r
7
s
2
9
t
7
)
Question
15
15.
t
16
u
12
t
2
u
2
=
(i)
t
18
u
14
(ii)
t
14
u
10
(iii)
t
18
u
10
(iv)
t
14
u
14
(v)
t
28
u
4
Question
16
16.
p
7
p
17
=
(i)
1
p
119
(ii)
p
10
(iii)
1
p
(-10)
(iv)
1
p
24
(v)
1
p
10
Question
17
17.
(
m
2
)
(
n
+
8
)
=
(i)
m
(
n
+
18
)
(ii)
m
(
2
n
+
16
)
(iii)
m
(
n
+
12
)
(iv)
m
(
2
n
+
10
)
(v)
m
(
2
n
−
16
)
Question
18
18.
(
r
9
s
4
)
t
=
(i)
r
9
t
.
−
s
4
t
(ii)
s
4
t
r
9
t
(iii)
r
9
t
s
4
t
(iv)
r
9
t
.
s
4
t
Question
19
19.
(
a
(
−
3
f
)
a
(
8
f
−
4
)
)
=
(i)
a
(
−
11
f
+
4
)
(ii)
a
(
5
f
−
4
)
(iii)
a
(
−
4
f
2
−
23
f
−
5
)
(iv)
a
(
−
11
f
+
5
)
(v)
a
(
−
3
f
+
10
)
Question
20
20.
(
m
11
m
4
)
8
=
(i)
m
11
(ii)
m
56
(iii)
m
4
(iv)
8
m
56
(v)
m
15
Question
21
21.
(
f
14
f
)
2
=
(i)
f
(
14
f
+
2
)
(ii)
f
28
f
(iii)
2
f
28
f
(iv)
f
14
f
Question
22
22.
(
q
(-4)
.
r
3
)
-3
=
(i)
q
12
.
r
(-12)
(ii)
q
16
.
r
(-9)
(iii)
q
(-7)
.
1
(iv)
q
12
.
r
(-9)
(v)
q
(-1)
.
r
6
Question
23
23.
(
(
g
3
)
2
)
-9
=
(i)
g
(-3)
(ii)
g
15
(iii)
g
(-54)
(iv)
g
(-4)
(v)
g
10
Question
24
24.
(
3
j
.
4
k
(-2)
)
-3
=
(i)
k
6
.
1728
j
(-3)
(ii)
3
k
6
4
j
(-3)
(iii)
−
9
k
6
−
12
j
(-3)
(iv)
k
6
1728
j
3
(v)
j
6
1728
k
(-3)
Question
25
25.
(
s
−
t
)
(-9)
.
(
s
−
t
)
(-6)
=
(i)
(
s
−
t
)
(-3)
(ii)
(
s
−
t
)
(-9)
(iii)
(
s
−
t
)
54
(iv)
(
s
−
t
)
(-6)
(v)
(
s
−
t
)
(-15)
Question
26
26.
(
3
w
5
3
x
5
)
-2
=
(i)
9
w
(-10)
9
x
5
(ii)
9
w
(-10)
9
x
(-10)
(iii)
9
x
10
9
w
10
(iv)
9
w
3
9
x
3
Question
27
27.
2
m
(-10)
3
n
(-4)
=
(i)
3
n
4
2
m
10
(ii)
3
n
(-4)
2
m
(-10)
(iii)
2
n
4
3
m
10
(iv)
2
n
(-4)
3
m
(-10)
(v)
2
m
4
3
n
10
Question
28
28.
Which of the following statements are true?
a)
a
0
=
1
(
a
≠
0)
b)
x
m
x
n
=
x
m
n
c)
(
x
m
)
n
=
(
x
n
)
m
d)
(
x
m
)
n
=
x
(
m
+
n
)
e)
a
m
.
a
n
=
a
m
n
f)
a
.
x
m
=
a
m
.
x
m
(i)
{b,c,a}
(ii)
{b,a}
(iii)
{d,c}
(iv)
{a,c}
(v)
{e,f,a}
Question
29
29.
Simplify
(
8
h
.
81
(
h
−
4
)
.
100
(
h
−
2
)
64
(
h
−
4
)
.
9
(
h
−
2
)
.
10
(
h
−
3
)
)
(i)
8
4
.
9
(
−
2
)
.
10
1
(ii)
8
(
h
+
4
)
.
9
(
−
h
)
.
10
(
−
h
+
4
)
(iii)
8
(
−
h
+
8
)
.
9
(
−
h
)
.
10
(
−
h
+
4
)
(iv)
8
(
−
h
+
8
)
.
9
(
h
−
6
)
.
10
(
h
−
1
)
Question
30
30.
(
e
2
+
f
2
)
0
=
(i)
0
(ii)
e
2
+
f
2
(iii)
(-1)
(iv)
1
(v)
3
Question
31
31.
(
1
2
r
s
t
)
✕
(
−
6
s
10
t
9
)
✕
(
−
7
6
t
5
)
=
(i)
−
49
6
s
15
t
23
(ii)
7
2
r
s
11
t
15
(iii)
−
3
r
s
11
t
10
(iv)
49
72
t
15
r
s
6
(v)
7
2
r
s
16
t
19
Assignment Key
1) (ii)
2) (ii)
3) (iii)
4) (ii)
5) (v)
6) (iv)
7) (iv)
8) (iv)
9) (ii)
10) (i)
11) (iv)
12) (v)
13) (i)
14) (iii)
15) (ii)
16) (v)
17) (ii)
18) (iii)
19) (i)
20) (ii)
21) (ii)
22) (iv)
23) (iii)
24) (iv)
25) (v)
26) (iii)
27) (iii)
28) (iv)
29) (iv)
30) (iv)
31) (ii)
