EduSahara™ Worksheet

Question 1

1.

Simplify
√

121

−

√

49

√

9

+

√

100
=

(i)

4
11
(ii)

2
13
(iii)

6
13
(iv)

4
13
(v)

4
15

Question 2

2.

Find the exponential notation of

(i)

17 4
(ii)

15 3
(iii)

15 5
(iv)

15 4
(v)

12 4

Question 3

3.

-4

0
=

(i)

-1
(ii)

1
(iii)

undefined
(iv)

0
(v)

∞

Question 4

4.

3
√

0.0640
=

(i)

0.3
(ii)

0.5
(iii)

0.6
(iv)

0.4
(v)

0.04

Question 5

5.

√

0.6400
=

(i)

0.8
(ii)

0.08
(iii)

1
(iv)

0.9
(v)

0.7

Question 6

6.

Simplify
3
√

729

+

3
√

1728

3
√

125

−

3
√

27
=

(i)

19
2
(ii)

23
2
(iii)

21
(iv)

21
4
(v)

21
2

Question 7

7.

The smallest number by which 98 must be multiplied so that the product is a perfect square is?

(i)

5
(ii)

3
(iii)

(-1)
(iv)

1
(v)

2

Question 8

8.

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

(i)

102
(ii)

100
(iii)

99
(iv)

98
(v)

101

Question 9

9.

Which of the following is not a perfect square?

(i)

840
(ii)

625
(iii)

900
(iv)

841
(v)

529

Question 10

10.

√

169
16
=

(i)

15
4
(ii)

13
4
(iii)

13
2
(iv)

11
4
(v)

13
6

Question 11

11.

The smallest number by which 128 must be divided so that the quotient is a perfect square is?

(i)

2
(ii)

1
(iii)

3
(iv)

5
(v)

0

Question 12

12.

Find the
cube root
of
1
64

(i)

3
4
(ii)

1
4
(iii)

(
-1
4
)
(iv)

1
2
(v)

1
6

Question 13

13.

Find the least number that must be added to 1668 to get a perfect square?

(i)

12
(ii)

13
(iii)

14
(iv)

11
(v)

16

Question 14

14.

Find the cube root of
125

(i)

25
(ii)

2
(iii)

8
(iv)

28
(v)

5

Question 15

15.

The smallest number by which 32 must be multiplied so that the product is a perfect cube is?

(i)

1
(ii)

4
(iii)

0
(iv)

3
(v)

2

Question 16

16.

Which of the following is a perfect cube?

(i)

344
(ii)

1003
(iii)

64
(iv)

727
(v)

511

Question 17

17.

What is the unit place digit in the square of 3?

(i)

5
(ii)

6
(iii)

9
(iv)

7
(v)

4

Question 18

18.

How many digits are there in the square root of 68644?

(i)

2
(ii)

4
(iii)

3
(iv)

5
(v)

1

Question 19

19.

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

(i)

960
(ii)

962
(iii)

963
(iv)

959
(v)

961

Question 20

20.

Which of the following is not a perfect cube?

(i)

27
(ii)

8
(iii)

219
(iv)

343
(v)

729

Question 21

21.

-1

8
=

(i)

∞
(ii)

0
(iii)

undefined
(iv)

1
(v)

-1

Question 22

22.

Which of the following is a perfect square?

(i)

1684
(ii)

782
(iii)

577
(iv)

49
(v)

1848

Question 23

23.

Find the exponential notation of

(i)

(-7) 6
(ii)

(-10) 7
(iii)

(-10) 6
(iv)

(-10) 5
(v)

(-12) 6

Question 24

24.

Find the square root of
92.56

(i)

11.62
(ii)

9.62
(iii)

10.62
(iv)

7.62
(v)

8.62

Question 25

25.

How many digits are there in the square root of 676?

(i)

0
(ii)

2
(iii)

4
(iv)

3
(v)

1

Assignment Key