EduSahara™ Worksheet

Question 1

1.

The solution of
√

2
lies between

(i)

1.412 and 1.413
(ii)

1.413 and 1.414
(iii)

1.416 and 1.417
(iv)

1.415 and 1.416
(v)

1.414 and 1.415

Question 2

2.

(i)

9.3
(ii)

0.09
(iii)

2.93
(iv)

0.93
(v)

8.93

Question 3

3.

Identify the Pythagorean triplet whose middle number is 80

(i)

{19,80,79}
(ii)

{17,80,81}
(iii)

{19,80,81}
(iv)

{18,80,82}
(v)

{20,80,82}

Question 4

4.

Identify the Pythagorean triplet whose smallest number is 18

(i)

{18,81,83}
(ii)

{18,81,84}
(iii)

{18,80,82}
(iv)

{18,82,84}
(v)

{18,82,83}

Question 5

5.

(i)

4702
(ii)

47000
(iii)

470
(iv)

4698
(v)

4700

Question 6

6.

The solution of
√

2
lies between

(i)

1.4141 and 1.4142
(ii)

1.4143 and 1.4144
(iii)

1.4140 and 1.4141
(iv)

1.4142 and 1.4143
(v)

1.4144 and 1.4145

Question 7

7.

Find the number of numbers between
13 2
and
14 2

(i)

27
(ii)

26
(iii)

24
(iv)

28
(v)

25

Question 8

8.

Find the prime factorization of
6750

(i)

2

✕

3 3

✕

7 3
(ii)

2

✕

3 3

✕

5 3
(iii)

2

✕

3 2

✕

5 3
(iv)

2

✕

1

✕

5 3
(v)

2

✕

3 4

✕

5 3

Question 9

9.

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

(i)

1026
(ii)

1025
(iii)

1024
(iv)

1022
(v)

1023

Question 10

10.

Identify the Pythagorean triplet whose one of the numbers is 20

(i)

{20,100,103}
(ii)

{20,100,102}
(iii)

{20,101,102}
(iv)

{20,101,103}
(v)

{20,99,101}

Question 11

11.

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

(i)

4
(ii)

7
(iii)

1
(iv)

5
(v)

3

Question 12

12.

The solution of
√

6
lies between

(i)

2.44 and 2.45
(ii)

2.46 and 2.47
(iii)

2.42 and 2.43
(iv)

2.45 and 2.46
(v)

2.43 and 2.44

Question 13

13.

Find the square root of
5972.3806

(i)

78.2812
(ii)

77.2812
(iii)

79.2812
(iv)

75.2812
(v)

76.2812

Question 14

14.

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

(i)

9999
(ii)

9997
(iii)

10000
(iv)

10001
(v)

10002

Question 15

15.

Find the square root of
11.50

(i)

1.39
(ii)

4.39
(iii)

5.39
(iv)

2.39
(v)

3.39

Question 16

16.

Find the least number that must be added to 1216 to get a perfect square?

(i)

7
(ii)

10
(iii)

9
(iv)

8
(v)

12

Question 17

17.

How many digits are there in the square root of 380689?

(i)

3
(ii)

4
(iii)

2
(iv)

6
(v)

0

Question 18

18.

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

(i)

82
(ii)

80
(iii)

78
(iv)

81
(v)

84

Question 19

19.

The smallest number by which 2048 must be divided so that the quotient is a perfect square is?

(i)

4
(ii)

2
(iii)

3
(iv)

1
(v)

(-1)

Question 20

20.

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

(i)

4
(ii)

3
(iii)

0
(iv)

2
(v)

1

Question 21

21.

Express
13 2
as the sum of two consecutive integers

(i)

83 + 84
(ii)

84 + 85
(iii)

85 + 86
(iv)

82 + 87
(v)

86 + 83

Question 22

22.

Find the smallest perfect square which is divisible by each of the numbers 16,8,6

(i)

385
(ii)

288
(iii)

146
(iv)

768
(v)

144

Question 23

23.

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

(i)

1
(ii)

7
(iii)

4
(iv)

5
(v)

2

Question 24

24.

How many digits are there in the square root of 1600?

(i)

2
(ii)

0
(iii)

1
(iv)

5
(v)

3

Question 25

25.

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

(i)

9802
(ii)

9798
(iii)

9804
(iv)

9801
(v)

9800

Assignment Key