EduSahara™ Worksheet

Question 1

1.

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

(i)

9804
(ii)

9801
(iii)

9800
(iv)

9798
(v)

9802

Question 2

2.

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

(i)

99856
(ii)

99854
(iii)

99859
(iv)

99857
(v)

99855

Question 3

3.

Find the square root of
869.660

(i)

28.49
(ii)

29.49
(iii)

27.49
(iv)

30.49
(v)

31.49

Question 4

4.

What is the unit place digit in the square of 29?

(i)

2
(ii)

6
(iii)

4
(iv)

5
(v)

1

Question 5

5.

Which of the following is a Pythagorean triplet?

(i)

{20,97,101}
(ii)

{20,99,101}
(iii)

{20,98,100}
(iv)

{20,101,100}
(v)

{20,100,102}

Question 6

6.

The solution of
√

10
lies between

(i)

5 and 6
(ii)

3 and 4
(iii)

1 and 2
(iv)

4 and 5
(v)

2 and 3

Question 7

7.

Find the prime factorization of
5760

(i)

2 7

✕

3 3

✕

5
(ii)

2 7

✕

3 2

✕

5
(iii)

2 7

✕

3

✕

5
(iv)

2 7

✕

3 2

✕

8
(v)

2 7

✕

3 2

✕

2

Question 8

8.

If a number has 4 zeros at the end, its square has how many zeros?

(i)

7
(ii)

11
(iii)

9
(iv)

6
(v)

8

Question 9

9.

Find the
square root
of
1
4

(i)

1
(ii)

1
4
(iii)

(
-1
2
)
(iv)

3
2
(v)

1
2

Question 10

10.

Which of the following is a perfect square?

(i)

403
(ii)

6
(iii)

485
(iv)

4
(v)

2115

Question 11

11.

Find the smallest perfect square which is divisible by each of the numbers 4,6,16

(i)

146
(ii)

288
(iii)

192
(iv)

289
(v)

144

Question 12

12.

(i)

970
(ii)

9698
(iii)

9700
(iv)

97000
(v)

9702

Question 13

13.

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

(i)

16
(ii)

13
(iii)

18
(iv)

15
(v)

17

Question 14

14.

Find the least number that must be added to 2568 to get a perfect square?

(i)

34
(ii)

32
(iii)

35
(iv)

31
(v)

33

Question 15

15.

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

(i)

961
(ii)

958
(iii)

963
(iv)

960
(v)

962

Question 16

16.

Find the prime factorization of
160

(i)

2 5

✕

3
(ii)

2 5

✕

4
(iii)

2 5

✕

5
(iv)

2 5

✕

5 2
(v)

2 5

✕

8

Question 17

17.

Which of the following is not a perfect square?

(i)

400
(ii)

676
(iii)

166
(iv)

625
(v)

1936

Question 18

18.

Find the
square root
of
4

(i)

1
(ii)

3
(iii)

2
(iv)

4
(v)

0

Question 19

19.

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

(i)

10000
(ii)

10001
(iii)

9999
(iv)

10002
(v)

9997

Question 20

20.

The smallest number by which 27 must be multiplied so that the product is a perfect square is?

(i)

5
(ii)

2
(iii)

3
(iv)

1
(v)

4

Question 21

21.

How many digits are there in the square root of 5776?

(i)

5
(ii)

2
(iii)

0
(iv)

3
(v)

1

Question 22

22.

(i)

5.1
(ii)

0.3
(iii)

3.1
(iv)

1.1
(v)

31

Question 23

23.

Find the least number that must be subtracted from 495 to get a perfect square?

(i)

11
(ii)

14
(iii)

8
(iv)

12
(v)

10

Question 24

24.

The solution of
√

18
lies between

(i)

4.2425 and 4.2426
(ii)

4.2428 and 4.2429
(iii)

4.2424 and 4.2425
(iv)

4.2427 and 4.2428
(v)

4.2426 and 4.2427

Question 25

25.

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

(i)

1025
(ii)

1026
(iii)

1024
(iv)

1023
(v)

1021

Assignment Key