EduSahara™ Assignment
Name : Squares and Square Roots
Chapter : Powers and Roots
Grade : ICSE Grade VII
License : Non Commercial Use
Question
1
1.
Find the
square root
of
25
(i)
4
(ii)
8
(iii)
3
(iv)
6
(v)
5
Question
2
2.
Find the
square root
of
16
25
(i)
2
5
(ii)
4
3
(iii)
4
7
(iv)
4
5
(v)
6
5
Question
3
3.
Which of the following is a perfect square?
(i)
50
(ii)
674
(iii)
16
(iv)
80
(v)
364
Question
4
4.
Which of the following is not a perfect square?
(i)
676
(ii)
324
(iii)
143
(iv)
169
Question
5
5.
What is the unit place digit in the square of 27?
(i)
0
(ii)
1
(iii)
9
(iv)
8
(v)
4
Question
6
6.
If a number has 1 zeros at the end, its square has how many zeros?
(i)
1
(ii)
(-1)
(iii)
3
(iv)
5
(v)
2
Question
7
7.
Find the smallest perfect square which is divisible by each of the numbers 18,9,6
(i)
72
(ii)
324
(iii)
163
(iv)
36
(v)
38
Question
8
8.
How many digits are there in the square root of 4356?
(i)
(-1)
(ii)
5
(iii)
2
(iv)
3
(v)
1
Question
9
9.
How many digits are there in the square root of 908209?
(i)
3
(ii)
4
(iii)
6
(iv)
1
(v)
2
Question
10
10.
Find the least number that must be subtracted from 2040 to get a perfect square?
(i)
15
(ii)
13
(iii)
14
(iv)
16
(v)
17
Question
11
11.
Find the least number that must be added to 830 to get a perfect square?
(i)
9
(ii)
11
(iii)
12
(iv)
10
(v)
14
Question
12
12.
Find the smallest 2 digit number which is a perfect square?
(i)
17
(ii)
16
(iii)
19
(iv)
15
(v)
13
Question
13
13.
Find the greatest 2 digit number which is a perfect square?
(i)
83
(ii)
78
(iii)
82
(iv)
80
(v)
81
Question
14
14.
Find the smallest 3 digit number which is a perfect square?
(i)
101
(ii)
102
(iii)
99
(iv)
100
(v)
97
Question
15
15.
Find the greatest 3 digit number which is a perfect square?
(i)
959
(ii)
961
(iii)
960
(iv)
962
(v)
964
Question
16
16.
Find the square root of
54.50
(i)
9.38
(ii)
5.38
(iii)
6.38
(iv)
8.38
(v)
7.38
Question
17
17.
Find the square root of
430.700
(i)
18.753
(ii)
20.753
(iii)
22.753
(iv)
19.753
(v)
21.753
Question
18
18.
Find the square root of
5942.1000
(i)
78.085
(ii)
75.085
(iii)
77.085
(iv)
79.085
(v)
76.085
Question
19
19.
The smallest number by which 243 must be multiplied so that the product is a perfect square is?
(i)
5
(ii)
4
(iii)
3
(iv)
2
(v)
0
Question
20
20.
The smallest number by which 8000 must be divided so that the quotient is a perfect square is?
(i)
4
(ii)
5
(iii)
8
(iv)
6
(v)
3
Question
21
21.
√
25
196
=
(i)
5
12
(ii)
1
2
(iii)
3
14
(iv)
5
14
(v)
5
16
Question
22
22.
√
1.9600
=
(i)
1.6
(ii)
0.14
(iii)
1.4
(iv)
1.3
(v)
1.5
Question
23
23.
Simplify
√
100
−
√
9
√
121
+
√
4
=
(i)
7
11
(ii)
7
15
(iii)
7
13
(iv)
9
13
(v)
5
13
Assignment Key
1) (v)
2) (iv)
3) (iii)
4) (iii)
5) (iii)
6) (v)
7) (iv)
8) (iii)
9) (i)
10) (i)
11) (ii)
12) (ii)
13) (v)
14) (iv)
15) (ii)
16) (v)
17) (ii)
18) (iii)
19) (iii)
20) (ii)
21) (iv)
22) (iii)
23) (iii)
