EduSahara™ Worksheet

Question 1

1.

Identify the Pythagorean triplet whose one of the numbers is 26

(i)

{8,22,26}
(ii)

{9,25,26}
(iii)

{11,23,26}
(iv)

{10,24,26}
(v)

{12,25,26}

Question 2

2.

Which of the following is not a perfect square?

(i)

1933
(ii)

121
(iii)

9
(iv)

2209

Question 3

3.

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

(i)

1
(ii)

5
(iii)

2
(iv)

(-1)
(v)

3

Question 4

4.

(i)

4500
(ii)

450
(iii)

45000
(iv)

4502
(v)

4498

Question 5

5.

Find the square root of
243.330

(i)

13.599
(ii)

16.599
(iii)

14.599
(iv)

15.599
(v)

17.599

Question 6

6.

Which of the following is a Pythagorean triplet?

(i)

{8,13,17}
(ii)

{8,16,18}
(iii)

{8,15,17}
(iv)

{8,14,16}
(v)

{8,17,16}

Question 7

7.

The smallest number by which 578 must be multiplied so that the product is a perfect square is?

(i)

4
(ii)

3
(iii)

1
(iv)

(-1)
(v)

2

Question 8

8.

The solution of
√

12
lies between

(i)

3 and 4
(ii)

4 and 5
(iii)

1 and 2
(iv)

5 and 6
(v)

2 and 3

Question 9

9.

Find the prime factorization of
450

(i)

-1

✕

3 2

✕

5 2
(ii)

1

✕

3 2

✕

5 2
(iii)

2

✕

3 2

✕

5 2
(iv)

5

✕

3 2

✕

5 2
(v)

2 2

✕

3 2

✕

5 2

Question 10

10.

What is the unit place digit in the square of 32?

(i)

4
(ii)

1
(iii)

8
(iv)

9
(v)

2

Question 11

11.

Find the least number that must be subtracted from 1627 to get a perfect square?

(i)

27
(ii)

29
(iii)

28
(iv)

26
(v)

24

Question 12

12.

Find the square root of
15.62

(i)

4.95
(ii)

3.95
(iii)

5.95
(iv)

1.95
(v)

2.95

Question 13

13.

(i)

900
(ii)

90
(iii)

902
(iv)

898
(v)

9000

Question 14

14.

(i)

6.2
(ii)

2.2
(iii)

4.2
(iv)

42
(v)

0.4

Question 15

15.

Express
29 2
as the sum of two consecutive integers

(i)

420 + 421
(ii)

421 + 422
(iii)

419 + 420
(iv)

418 + 423
(v)

422 + 419

Question 16

16.

If a number has 3 zeros at the end, its square has how many zeros?

(i)

7
(ii)

4
(iii)

5
(iv)

6
(v)

8

Question 17

17.

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

(i)

4
(ii)

2
(iii)

3
(iv)

(-1)
(v)

1

Question 18

18.

How many digits are there in the square root of 254016?

(i)

0
(ii)

6
(iii)

2
(iv)

4
(v)

3

Question 19

19.

Find the least number that must be added to 724 to get a perfect square?

(i)

6
(ii)

5
(iii)

2
(iv)

7
(v)

4

Question 20

20.

The solution of
√

19
lies between

(i)

4.5 and 4.6
(ii)

4.3 and 4.4
(iii)

4.4 and 4.5
(iv)

4.1 and 4.2
(v)

4.2 and 4.3

Question 21

21.

Which of the following is a perfect square?

(i)

166
(ii)

1368
(iii)

289
(iv)

902
(v)

65

Question 22

22.

The solution of
√

10
lies between

(i)

3.1624 and 3.1625
(ii)

3.1620 and 3.1621
(iii)

3.1622 and 3.1623
(iv)

3.1621 and 3.1622
(v)

3.1623 and 3.1624

Question 23

23.

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

(i)

97
(ii)

103
(iii)

100
(iv)

101
(v)

99

Question 24

24.

Find the
square root
of
4
25

(i)

4
5
(ii)

2
7
(iii)

2
3
(iv)

0
(v)

2
5

Question 25

25.

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

(i)

961
(ii)

962
(iii)

959
(iv)

960
(v)

963

Assignment Key