EduSahara™ Assignment
Name : Exercise3
Chapter : Exponents and Powers
Grade : CBSE Grade VIII
License : Non Commercial Use
Question
1
1.
Simplify the expression
7
3
✕
7
3
(i)
4
6
(ii)
7
7
(iii)
7
6
(iv)
10
6
(v)
7
5
Question
2
2.
Simplify the expression
2
-6
✕
2
-6
(i)
2
-11
(ii)
5
-12
(iii)
2
-15
(iv)
2
-13
(v)
2
-12
Question
3
3.
Simplify the expression
(-3)
-5
✕
(-3)
-5
(i)
(-3)
-9
(ii)
(-3)
-10
(iii)
(-1)
-10
(iv)
(-3)
-11
(v)
(-6)
-10
Question
4
4.
Simplify the expression
-2
(
9
5
)
✕
-2
(
9
5
)
✕
-2
(
9
5
)
(i)
-6
(
11
5
)
(ii)
-5
(
9
5
)
(iii)
-6
(
9
5
)
(iv)
-6
(
7
5
)
(v)
-7
(
9
5
)
Question
5
5.
Simplify the expression
7
5
✕
7
6
(i)
7
12
(ii)
5
11
(iii)
7
11
(iv)
9
11
(v)
7
10
Question
6
6.
Simplify the expression
4
-7
✕
4
-9
(i)
6
-16
(ii)
4
-15
(iii)
4
-16
(iv)
4
-17
(v)
2
-16
Question
7
7.
Simplify the expression
3
(
-4
5
)
✕
7
(
-4
5
)
(i)
11
(
-4
5
)
(ii)
10
(
-2
5
)
(iii)
10
(
-4
5
)
(iv)
9
(
-4
5
)
(v)
10
(
-6
5
)
Question
8
8.
Simplify the expression
(-3)
4
✕
(-9)
4
(i)
27
4
(ii)
27
5
(iii)
25
4
(iv)
27
3
(v)
29
4
Question
9
9.
Simplify the expression
(
-8
9
)
(-7)
✕
(
-8
9
)
(-6)
✕
(
-8
9
)
(-6)
(i)
(
-8
9
)
(-252)
(ii)
(
-8
7
)
(-252)
(iii)
(
-8
9
)
(-255)
(iv)
(
-8
11
)
(-252)
(v)
(
-8
9
)
(-250)
Question
10
10.
Simplify the expression
5
-7
✕
5
-7
✕
-7
(
9
7
)
(i)
-8
(
225
7
)
(ii)
-6
(
225
7
)
(iii)
-7
(
223
7
)
(iv)
-7
(
225
7
)
(v)
-7
(
227
7
)
Question
11
11.
Simplify the expression
(
9/4
)
(
7
3
)
✕
(
9/4
)
(
5
3
)
✕
(
9/4
)
(
7
6
)
(i)
(
9/2
)
(
245
54
)
(ii)
(
9/4
)
(
245
54
)
(iii)
(
3/2
)
(
245
54
)
(iv)
(
9/4
)
(
9
2
)
(v)
(
9/4
)
(
247
54
)
Question
12
12.
Simplify
(-3)
2
(-5)
2
(i)
3
5
(ii)
2
(
3
5
)
(iii)
1
(iv)
2
(
1
5
)
(v)
3
(
3
5
)
Question
13
13.
Simplify
(-2)
2
✕
4
2
(-3)
2
✕
(-2)
2
(i)
3
(
4
3
)
(ii)
4
3
(iii)
2
(
4
3
)
(iv)
2
(
2
3
)
(v)
2
2
Question
14
14.
Simplify
(-3)
2
✕
(-2)
-2
✕
2
-2
(-5)
2
✕
(-4)
2
✕
(-3)
-2
(i)
2
(
11
80
)
(ii)
9
80
(iii)
3
(
9
80
)
(iv)
2
(
9
80
)
(v)
2
(
7
80
)
Question
15
15.
Simplify
(-2)
-2
✕
(-2)
2
✕
(-2)
2
✕
4
-2
(-5)
-2
✕
(-5)
2
✕
5
-2
✕
5
2
(i)
2
-2
(ii)
4
-2
(iii)
(-1)
-2
(iv)
2
-3
(v)
2
-1
Question
16
16.
Simplify
2
3
✕
(-2)
2
(-5)
3
✕
(-2)
-3
(i)
2
8
3
3
(ii)
2
9
5
3
(iii)
2
8
5
3
(iv)
2
7
5
3
(v)
2
8
8
3
Question
17
17.
Simplify
4
-2
✕
5
-3
✕
4
2
3
-3
✕
(-2)
-2
✕
4
3
(i)
3
4
2
4
✕
5
3
(ii)
3
3
(-1)
4
✕
5
3
(iii)
3
3
2
4
✕
5
3
(iv)
3
3
2
4
✕
8
3
(v)
3
2
2
4
✕
5
3
Question
18
18.
Simplify
(-2)
3
✕
(-4)
2
✕
3
3
5
3
✕
5
3
✕
(-4)
2
✕
(-4)
2
(i)
-1
✕
2
6
✕
3
3
2
8
✕
5
6
(ii)
-1
✕
2
7
✕
3
3
2
8
✕
5
6
(iii)
-1
✕
2
7
✕
3
4
2
8
✕
5
6
(iv)
-1
✕
2
7
✕
3
3
(-1)
8
✕
5
6
(v)
-1
✕
2
7
✕
3
3
2
8
✕
8
6
Question
19
19.
Simplify
2
-2
✕
(-4)
-2
✕
(-5)
-2
✕
3
-3
(-5)
-2
✕
(-2)
-2
✕
2
-3
(i)
1
2
✕
3
(ii)
2
2
✕
3
3
(iii)
1
2
✕
5
3
(iv)
1
2
✕
3
3
(v)
0
2
✕
3
3
Question
20
20.
Simplify
(
5
b
.
36
(
b
−
3
)
.
49
(
b
−
4
)
25
(
b
−
3
)
.
6
(
b
−
4
)
.
7
(
b
−
3
)
)
(i)
5
(
−
b
+
6
)
.
6
(
b
−
2
)
.
7
(
b
−
5
)
(ii)
5
3
.
6
1
.
7
(
−
1
)
(iii)
5
(
−
b
+
6
)
.
6
(
−
b
+
5
)
.
7
(
−
b
+
2
)
(iv)
5
(
b
+
3
)
.
6
(
−
b
+
5
)
.
7
(
−
b
+
2
)
Assignment Key
1) (iii)
2) (v)
3) (ii)
4) (iii)
5) (iii)
6) (iii)
7) (iii)
8) (i)
9) (i)
10) (iv)
11) (ii)
12) (ii)
13) (iii)
14) (iv)
15) (i)
16) (iii)
17) (iii)
18) (ii)
19) (iv)
20) (i)
