EduSahara™ Worksheet

Question 1

1.

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

(i)

103
(ii)

100
(iii)

101
(iv)

99
(v)

98

Question 2

2.

The solution of
√

19
lies between

(i)

4 and 5
(ii)

3 and 4
(iii)

6 and 7
(iv)

5 and 6
(v)

2 and 3

Question 3

3.

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

(i)

1024
(ii)

1026
(iii)

1022
(iv)

1025
(v)

1023

Question 4

4.

The smallest number by which 8192 must be divided so that the quotient is a perfect cube is?

(i)

2
(ii)

4
(iii)

1
(iv)

0
(v)

3

Question 5

5.

Find the square root of
19.40

(i)

6.4
(ii)

3.4
(iii)

5.4
(iv)

4.4
(v)

2.4

Question 6

6.

If a number has 2 zeros at the end, its square has how many zeros?

(i)

5
(ii)

4
(iii)

6
(iv)

3
(v)

2

Question 7

7.

Find the square root of
5034.7485

(i)

70.956
(ii)

72.956
(iii)

71.956
(iv)

68.956
(v)

69.956

Question 8

8.

Find the value of
6 3
−
5 3

(i)

90
(ii)

91
(iii)

88
(iv)

92
(v)

93

Question 9

9.

Which of the following is a perfect cube?

(i)

999
(ii)

732
(iii)

344
(iv)

27
(v)

62

Question 10

10.

Find the prime factorization of
1078

(i)

2

✕

7 2

✕

11
(ii)

1

✕

7 2

✕

11
(iii)

2

✕

7 2

✕

11 2
(iv)

2

✕

7 2

✕

9
(v)

2

✕

7 2

✕

13

Question 11

11.

(i)

160
(ii)

1598
(iii)

16000
(iv)

1600
(v)

1602

Question 12

12.

Find the prime factorization of
82

(i)

4

✕

41
(ii)

2

✕

41 2
(iii)

2 -1

✕

41
(iv)

1

✕

41
(v)

2

✕

41

Question 13

13.

Find the square root of
460.700

(i)

23.464
(ii)

19.464
(iii)

20.464
(iv)

21.464
(v)

22.464

Question 14

14.

Find the number of numbers between
3 2
and
4 2

(i)

9
(ii)

5
(iii)

6
(iv)

3
(v)

7

Question 15

15.

The smallest number by which 21296 must be divided so that the quotient is a perfect square is?

(i)

10
(ii)

12
(iii)

14
(iv)

9
(v)

11

Question 16

16.

Find the prime factorization of
216

(i)

2 3

✕

5 3
(ii)

2 3

✕

3 3
(iii)

(-1) 3

✕

3 3
(iv)

2 4

✕

3 3
(v)

2 3

✕

3 2

Question 17

17.

Which of the following is a perfect square?

(i)

323
(ii)

2307
(iii)

144
(iv)

10
(v)

959

Question 18

18.

(i)

1000
(ii)

100
(iii)

10000
(iv)

1002
(v)

998

Question 19

19.

The solution of
√

12
lies between

(i)

3.462 and 3.463
(ii)

3.465 and 3.466
(iii)

3.463 and 3.464
(iv)

3.464 and 3.465
(v)

3.466 and 3.467

Question 20

20.

Find the prime factorization of
24

(i)

2 3

✕

3 2
(ii)

2 3

✕

2
(iii)

2 3

✕

3
(iv)

(-1) 3

✕

3
(v)

4 3

✕

3

Question 21

21.

Find the
square root
of
25
4

(i)

5
2
(ii)

9
4
(iii)

7
2
(iv)

3
2
(v)

3

Question 22

22.

Which of the following is not a perfect cube?

(i)

27
(ii)

64
(iii)

128
(iv)

512
(v)

1000

Question 23

23.

(i)

0.8
(ii)

84
(iii)

10.4
(iv)

8.4
(v)

6.4

Question 24

24.

Find the
cube root
of
1
27

(i)

(
-1
3
)
(ii)

1
(iii)

1
3
(iv)

1
5

Question 25

25.

Find the least number that must be added to 193 to get a perfect square?

(i)

0
(ii)

4
(iii)

3
(iv)

6
(v)

2

Assignment Key