EduSahara™ Worksheet

Question 1

1.

Find the
square root
of
25
9

(i)

5
3
(ii)

1
(iii)

3
(iv)

7
3
(v)

7
5

Question 2

2.

What is the unit place digit in the square of 18?

(i)

1
(ii)

4
(iii)

9
(iv)

6
(v)

3

Question 3

3.

Find the value of
5 3
+
4 3

(i)

188
(ii)

187
(iii)

189
(iv)

190
(v)

192

Question 4

4.

Find the square root of
50.78

(i)

5.13
(ii)

6.13
(iii)

9.13
(iv)

8.13
(v)

7.13

Question 5

5.

Find the greatest 4 digit number which is a perfect square?

(i)

9804
(ii)

9802
(iii)

9801
(iv)

9798
(v)

9800

Question 6

6.

(i)

2.62
(ii)

6.2
(iii)

8.62
(iv)

0.62
(v)

0.06

Question 7

7.

Which of the following is a perfect cube?

(i)

343
(ii)

124
(iii)

997
(iv)

218
(v)

9

Question 8

8.

The smallest number by which 392 must be multiplied so that the product is a perfect cube is?

(i)

10
(ii)

4
(iii)

7
(iv)

6
(v)

8

Question 9

9.

The solution of
√

10
lies between

(i)

2 and 3
(ii)

1 and 2
(iii)

5 and 6
(iv)

4 and 5
(v)

3 and 4

Question 10

10.

The smallest number by which 20 must be multiplied so that the product is a perfect square is?

(i)

2
(ii)

5
(iii)

4
(iv)

6
(v)

7

Question 11

11.

Find the least number that must be subtracted from 1858 to get a perfect square?

(i)

11
(ii)

9
(iii)

8
(iv)

6
(v)

10

Question 12

12.

Find the square root of
7619.1000

(i)

86.2875
(ii)

85.2875
(iii)

88.2875
(iv)

89.2875
(v)

87.2875

Question 13

13.

The smallest number by which 500 must be divided so that the quotient is a perfect square is?

(i)

4
(ii)

8
(iii)

6
(iv)

3
(v)

5

Question 14

14.

Find the least number that must be added to 2194 to get a perfect square?

(i)

18
(ii)

15
(iii)

14
(iv)

12
(v)

16

Question 15

15.

Find the smallest perfect square which is divisible by each of the numbers 16,14,18

(i)

14113
(ii)

14112
(iii)

16128
(iv)

7058
(v)

7056

Question 16

16.

Find the smallest 3 digit number which is a perfect square?

(i)

100
(ii)

98
(iii)

102
(iv)

99
(v)

101

Question 17

17.

(i)

37000
(ii)

370
(iii)

3698
(iv)

3702
(v)

3700

Question 18

18.

Find the cube root of
12167

(i)

529
(ii)

532
(iii)

23
(iv)

26
(v)

20

Question 19

19.

The solution of
√

5
lies between

(i)

2.0 and 2.1
(ii)

2.2 and 2.3
(iii)

2.1 and 2.2
(iv)

2.4 and 2.5
(v)

2.3 and 2.4

Question 20

20.

How many digits are there in the square root of 390625?

(i)

2
(ii)

4
(iii)

1
(iv)

3
(v)

5

Question 21

21.

Find the greatest 3 digit number which is a perfect square?

(i)

962
(ii)

960
(iii)

961
(iv)

963
(v)

958

Question 22

22.

Which of the following is not a perfect cube?

(i)

512
(ii)

125
(iii)

216
(iv)

8
(v)

67

Question 23

23.

Find the greatest 5 digit number which is a perfect square?

(i)

99856
(ii)

99858
(iii)

99857
(iv)

99854
(v)

99855

Question 24

24.

Find the greatest 2 digit number which is a perfect square?

(i)

82
(ii)

80
(iii)

81
(iv)

83
(v)

78

Question 25

25.

Find the square root of
910.181

(i)

32.169
(ii)

30.169
(iii)

28.169
(iv)

31.169
(v)

29.169

Assignment Key