EduSahara™ Worksheet

Question 1

1.

Find the prime factorization of
20

(i)

5 2

✕

5
(ii)

2 3

✕

5
(iii)

2 2

✕

4
(iv)

0

✕

5
(v)

2 2

✕

5

Question 2

2.

(i)

6498
(ii)

65000
(iii)

650
(iv)

6502
(v)

6500

Question 3

3.

(i)

45
(ii)

4500
(iii)

452
(iv)

448
(v)

450

Question 4

4.

Find the prime factorization of
57

(i)

3

✕

19 2
(ii)

3

✕

18
(iii)

3

✕

19
(iv)

3

✕

22
(v)

3

✕

17

Question 5

5.

Which of the following is not a perfect cube?

(i)

27
(ii)

512
(iii)

1000
(iv)

8
(v)

219

Question 6

6.

How many digits are there in the square root of 65536?

(i)

4
(ii)

3
(iii)

5
(iv)

0
(v)

2

Question 7

7.

Which of the following is a perfect cube?

(i)

29
(ii)

340
(iii)

126
(iv)

63
(v)

8

Question 8

8.

Find the value of
17 3
+
16 3

(i)

9009
(ii)

9012
(iii)

9008
(iv)

9010
(v)

9006

Question 9

9.

Express
21 2
as the sum of two consecutive integers

(i)

222 + 219
(ii)

220 + 221
(iii)

219 + 220
(iv)

218 + 223
(v)

221 + 222

Question 10

10.

Which of the following is not a perfect square?

(i)

2025
(ii)

1934
(iii)

169
(iv)

484
(v)

529

Question 11

11.

Identify the Pythagorean triplet whose one of the numbers is 15

(i)

{9,15,14}
(ii)

{9,15,16}
(iii)

{7,15,16}
(iv)

{10,15,17}
(v)

{8,15,17}

Question 12

12.

Find the value of
27 3
−
26 3

(i)

2109
(ii)

2106
(iii)

2104
(iv)

2107
(v)

2108

Question 13

13.

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

(i)

10001
(ii)

10003
(iii)

10000
(iv)

9999
(v)

9997

Question 14

14.

The solution of
√

3
lies between

(i)

1.732 and 1.733
(ii)

1.733 and 1.734
(iii)

1.730 and 1.731
(iv)

1.734 and 1.735
(v)

1.731 and 1.732

Question 15

15.

Find the cube root of
2197

(i)

169
(ii)

13
(iii)

16
(iv)

10
(v)

172

Question 16

16.

Find the
square root
of
9
4

(i)

3
2
(ii)

3
(iii)

3
4
(iv)

1
2
(v)

5
2

Question 17

17.

(i)

0.4
(ii)

5.9
(iii)

39
(iv)

1.9
(v)

3.9

Question 18

18.

Find the least number that must be added to 2196 to get a perfect square?

(i)

13
(ii)

12
(iii)

15
(iv)

11
(v)

14

Question 19

19.

Find the square root of
45.20

(i)

5.72
(ii)

8.72
(iii)

7.72
(iv)

4.72
(v)

6.72

Question 20

20.

Which of the following is a perfect square?

(i)

675
(ii)

1764
(iii)

673
(iv)

787
(v)

101

Question 21

21.

Find the square root of
222.530

(i)

12.917
(ii)

14.917
(iii)

16.917
(iv)

15.917
(v)

13.917

Question 22

22.

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

(i)

9801
(ii)

9798
(iii)

9803
(iv)

9800
(v)

9802

Question 23

23.

The solution of
√

20
lies between

(i)

6 and 7
(ii)

2 and 3
(iii)

3 and 4
(iv)

4 and 5
(v)

5 and 6

Question 24

24.

Find the square root of
3946.4283

(i)

61.8206
(ii)

62.8206
(iii)

60.8206
(iv)

64.8206
(v)

63.8206

Question 25

25.

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

(i)

4
(ii)

1
(iii)

7
(iv)

5
(v)

3

Assignment Key