EduSahara™ Assignment
Name : Simplification of Base Power Expressions
Chapter : Exponents
Grade : ICSE Grade VII
License : Non Commercial Use
Question
1
1.
Simplify the expression
7
9
✕
7
9
(i)
9
18
(ii)
5
18
(iii)
7
19
(iv)
7
18
(v)
7
17
Question
2
2.
Simplify the expression
5
-7
✕
5
-7
✕
5
-7
(i)
5
-21
(ii)
3
-21
(iii)
8
-21
(iv)
5
-22
(v)
5
-20
Question
3
3.
Simplify the expression
(-9)
3
✕
(-9)
3
(i)
(-9)
7
(ii)
(-6)
6
(iii)
(-9)
6
(iv)
(-12)
6
(v)
(-9)
5
Question
4
4.
Simplify the expression
(-9)
-5
✕
(-9)
-5
✕
(-9)
-5
(i)
(-9)
-16
(ii)
(-7)
-15
(iii)
(-9)
-14
(iv)
(-9)
-15
(v)
(-11)
-15
Question
5
5.
Simplify the expression
8
(
4
3
)
✕
8
(
4
3
)
(i)
16
(
4
3
)
(ii)
17
(
4
3
)
(iii)
16
(
2
3
)
(iv)
15
(
4
3
)
(v)
2
16
Question
6
6.
Simplify the expression
-9
(
8
5
)
✕
-9
(
8
5
)
✕
-9
(
8
5
)
(i)
-26
(
8
5
)
(ii)
-27
(
6
5
)
(iii)
-27
(
8
5
)
(iv)
-28
(
8
5
)
(v)
2
-27
Question
7
7.
Simplify the expression
3
(
-5
7
)
✕
3
(
-5
7
)
(i)
5
(
-5
7
)
(ii)
6
(
-5
7
)
(iii)
6
(
-3
7
)
(iv)
(-1)
6
(v)
7
(
-5
7
)
Question
8
8.
Simplify the expression
-2
(
-7
6
)
✕
-2
(
-7
6
)
(i)
-4
(
-3
2
)
(ii)
-4
(
-7
6
)
(iii)
-5
(
-7
6
)
(iv)
-4
(
-5
6
)
(v)
-3
(
-7
6
)
Question
9
9.
Simplify the expression
5
5
✕
5
2
✕
5
7
(i)
7
14
(ii)
5
14
(iii)
5
15
(iv)
5
13
(v)
3
14
Question
10
10.
Simplify the expression
7
-7
✕
7
-4
(i)
10
-11
(ii)
7
-11
(iii)
5
-11
(iv)
7
-12
(v)
7
-10
Question
11
11.
Simplify the expression
(-2)
2
✕
(-2)
5
✕
(-2)
2
(i)
(-2)
8
(ii)
(-2)
10
(iii)
(-2)
12
(iv)
(-2)
9
(v)
(-5)
9
Question
12
12.
Simplify the expression
(-6)
-4
✕
(-6)
-2
✕
(-6)
-3
(i)
(-6)
-9
(ii)
(-6)
-8
(iii)
(-6)
-10
(iv)
(-8)
-9
(v)
(-4)
-9
Question
13
13.
Simplify the expression
2
(
9
2
)
✕
7
(
9
2
)
(i)
9
(
11
2
)
(ii)
9
(
7
2
)
(iii)
9
(
9
2
)
(iv)
10
(
9
2
)
(v)
8
(
9
2
)
Question
14
14.
Simplify the expression
8
-7
✕
8
-4
✕
8
-3
(i)
5
-14
(ii)
8
-13
(iii)
8
-15
(iv)
8
-14
(v)
10
-14
Question
15
15.
Simplify the expression
2
(
-2
7
)
✕
5
(
-2
7
)
(i)
8
(
-2
7
)
(ii)
7
(
-2
7
)
(iii)
7
(
-4
7
)
(iv)
6
(
-2
7
)
(v)
9
(
-2
7
)
Question
16
16.
Simplify the expression
-6
(
-3
2
)
✕
-5
(
-3
2
)
✕
-6
(
-3
2
)
(i)
-17
(
-5
2
)
(ii)
-16
(
-3
2
)
(iii)
-17
(
-3
2
)
(iv)
-18
(
-3
2
)
(v)
-17
(
-1
2
)
Question
17
17.
Simplify the expression
6
2
✕
3
2
(i)
15
2
(ii)
18
3
(iii)
21
2
(iv)
18
(v)
18
2
Question
18
18.
Simplify the expression
6
-6
✕
2
-6
(i)
12
-5
(ii)
12
-7
(iii)
10
-6
(iv)
12
-6
(v)
14
-6
Question
19
19.
Simplify the expression
(-5)
5
✕
(-5)
5
(i)
25
6
(ii)
25
4
(iii)
27
5
(iv)
25
5
(v)
22
5
Question
20
20.
Simplify the expression
(-4)
-2
✕
(-9)
-2
(i)
39
-2
(ii)
36
-3
(iii)
34
-2
(iv)
36
-1
(v)
36
-2
Question
21
21.
Simplify the expression
5
(
7
2
)
✕
5
(
7
6
)
✕
5
(
7
4
)
(i)
4
(
343
48
)
(ii)
6
(
343
48
)
(iii)
5
(
115
16
)
(iv)
5
(
341
48
)
(v)
5
(
343
48
)
Question
22
22.
Simplify the expression
-6
(
9
5
)
✕
-6
(
9
8
)
(i)
-5
(
81
40
)
(ii)
-7
(
81
40
)
(iii)
-6
(
83
40
)
(iv)
-6
(
79
40
)
(v)
-6
(
81
40
)
Question
23
23.
Simplify the expression
8
(
-9
5
)
✕
8
(
-9
5
)
(i)
8
(
83
25
)
(ii)
9
(
81
25
)
(iii)
8
(
81
25
)
(iv)
8
(
79
25
)
(v)
7
(
81
25
)
Question
24
24.
Simplify the expression
-4
(
-5
4
)
✕
-4
(
-3
2
)
(i)
-4
(
13
8
)
(ii)
-4
(
17
8
)
(iii)
-4
(
15
8
)
(iv)
-5
(
15
8
)
(v)
-3
(
15
8
)
Question
25
25.
Simplify
(-4)
-2
(-3)
-2
(i)
2
(
5
4
)
(ii)
3
4
(iii)
2
(
1
4
)
(iv)
3
(
3
4
)
(v)
2
(
3
4
)
Question
26
26.
Simplify
2
2
✕
2
2
(-5)
-2
✕
2
2
(i)
10
2
(ii)
7
2
(iii)
10
(iv)
10
3
(v)
12
2
Question
27
27.
Simplify
3
2
✕
(-5)
-2
✕
(-5)
-2
2
2
✕
5
-2
✕
(-3)
2
(i)
10
-1
(ii)
10
-3
(iii)
7
-2
(iv)
10
-2
(v)
13
-2
Question
28
28.
Simplify
(-4)
-2
✕
5
-2
✕
(-2)
-2
✕
(-2)
2
(-4)
-2
✕
2
2
✕
5
-2
✕
(-3)
2
(i)
6
-3
(ii)
9
-2
(iii)
6
-2
(iv)
6
-1
(v)
3
-2
Question
29
29.
Simplify
2
-2
✕
(-3)
-3
5
-2
✕
2
-3
(i)
-1
✕
2
✕
5
3
3
(ii)
-1
✕
2
✕
5
2
3
3
(iii)
-1
✕
2
✕
5
2
5
3
(iv)
-1
✕
2
2
✕
5
2
3
3
(v)
-1
✕
2
✕
5
2
0
Question
30
30.
Simplify
(-3)
-3
✕
(-3)
3
✕
(-3)
2
3
2
✕
5
2
✕
(-5)
-2
(i)
2
(ii)
3
(iii)
0
(iv)
1
(v)
-2
Question
31
31.
Simplify
4
3
✕
3
3
✕
5
3
2
3
✕
2
3
✕
3
3
✕
3
2
(i)
5
3
5
2
(ii)
5
3
3
2
(iii)
5
2
3
2
(iv)
5
3
0
(v)
5
4
3
2
Question
32
32.
Simplify
(-4)
-3
✕
(-4)
-2
✕
(-5)
-3
✕
2
-3
(-3)
-2
✕
3
-3
✕
(-2)
-3
(i)
-1
✕
2
3
✕
3
5
2
13
✕
5
3
(ii)
-1
✕
2
3
✕
3
5
2
13
✕
3
3
(iii)
-1
✕
2
4
✕
3
5
2
13
✕
5
3
(iv)
-1
✕
2
2
✕
3
5
2
13
✕
5
3
(v)
-1
✕
2
3
✕
3
5
5
13
✕
5
3
Question
33
33.
Find the reciprocal of
2
9
(i)
9
(
-1
2
)
(ii)
8
(
1
2
)
(iii)
9
(
3
2
)
(iv)
10
(
1
2
)
(v)
9
(
1
2
)
Question
34
34.
Find the reciprocal of
8
(
-7
2
)
(i)
8
(
-4
7
)
(ii)
11
(
-2
7
)
(iii)
9
(
-2
7
)
(iv)
7
(
-2
7
)
(v)
8
(
-2
7
)
Question
35
35.
(
8
9
✕
9
8
)
6
=
(i)
8
9
✕
9
8
(ii)
8
48
✕
9
54
(iii)
8
54
✕
9
48
(iv)
8
9
✕
9
48
(v)
8
54
✕
9
8
Question
36
36.
(
5
5
)
-6
✕
(
7
2
)
-4
✕
(
8
3
)
2
(
5
(-5)
)
-6
✕
(
7
3
)
-2
✕
(
8
(-4)
)
4
=
(i)
5
(-60)
✕
7
(-1)
✕
8
22
(ii)
5
(-59)
✕
7
(-2)
✕
8
22
(iii)
5
(-60)
✕
7
(-2)
✕
8
23
(iv)
5
(-60)
✕
7
(-2)
✕
8
22
Question
37
37.
[
(
8
3
)
3
✕
(
8
2
)
4
]
÷
8
17
(i)
0
(ii)
8
(iii)
2
(iv)
1
(v)
3
Question
38
38.
[
-6
(
5
4
)
✕
-6
(
3
9
)
]
÷
[
6
(
4
5
)
✕
6
(
9
3
)
]
=
(i)
3
9
(ii)
0
(iii)
1
(iv)
5
4
(v)
(-1)
Assignment Key
1) (iv)
2) (i)
3) (iii)
4) (iv)
5) (i)
6) (iii)
7) (ii)
8) (ii)
9) (ii)
10) (ii)
11) (iv)
12) (i)
13) (iii)
14) (iv)
15) (ii)
16) (iii)
17) (v)
18) (iv)
19) (iv)
20) (v)
21) (v)
22) (v)
23) (iii)
24) (iii)
25) (v)
26) (i)
27) (iv)
28) (iii)
29) (ii)
30) (iv)
31) (ii)
32) (i)
33) (v)
34) (v)
35) (iii)
36) (iv)
37) (iv)
38) (iii)
