EduSahara™ Worksheet

Question 1

1.

Which of the following is a Pythagorean triplet?

(i)

{14,47,49}
(ii)

{14,48,50}
(iii)

{14,50,49}
(iv)

{14,49,51}
(v)

{14,46,50}

Question 2

2.

Identify the Pythagorean triplet whose middle number is 63

(i)

{17,63,62}
(ii)

{18,63,65}
(iii)

{16,63,65}
(iv)

{15,63,64}
(v)

{17,63,64}

Question 3

3.

Find the value of
20 3
−
19 3

(i)

1139
(ii)

1144
(iii)

1142
(iv)

1141
(v)

1140

Question 4

4.

How many digits are there in the square root of 4624?

(i)

(-1)
(ii)

2
(iii)

5
(iv)

1
(v)

3

Question 5

5.

Identify the Pythagorean triplet whose largest number is 82

(i)

{17,81,82}
(ii)

{16,78,82}
(iii)

{18,80,82}
(iv)

{19,79,82}
(v)

{20,81,82}

Question 6

6.

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

(i)

97
(ii)

100
(iii)

101
(iv)

99
(v)

103

Question 7

7.

Find the
cube root
of
-27

(i)

-3
(ii)

-5
(iii)

-1
(iv)

-2
(v)

-4

Question 8

8.

Find the value of
30 3
+
29 3

(i)

51389
(ii)

51388
(iii)

51390
(iv)

51387
(v)

51391

Question 9

9.

Find the prime factorization of
2254

(i)

2

✕

7 2

✕

23 2
(ii)

2

✕

7 2

✕

21
(iii)

2

✕

10 2

✕

23
(iv)

2

✕

7

✕

23
(v)

2

✕

7 2

✕

23

Question 10

10.

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

(i)

84
(ii)

80
(iii)

82
(iv)

81
(v)

78

Question 11

11.

(i)

150
(ii)

1500
(iii)

15
(iv)

152
(v)

148

Question 12

12.

Identify the Pythagorean triplet whose one of the numbers is 24

(i)

{12,24,26}
(ii)

{11,24,25}
(iii)

{9,24,25}
(iv)

{10,24,26}
(v)

{11,24,23}

Question 13

13.

The solution of
√

17
lies between

(i)

4.1232 and 4.1233
(ii)

4.1230 and 4.1231
(iii)

4.1231 and 4.1232
(iv)

4.1229 and 4.1230
(v)

4.1233 and 4.1234

Question 14

14.

The solution of
√

6
lies between

(i)

2.42 and 2.43
(ii)

2.44 and 2.45
(iii)

2.45 and 2.46
(iv)

2.46 and 2.47
(v)

2.43 and 2.44

Question 15

15.

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

(i)

1025
(ii)

1023
(iii)

1027
(iv)

1021
(v)

1024

Question 16

16.

The smallest number by which 32 must be divided so that the quotient is a perfect square is?

(i)

1
(ii)

2
(iii)

4
(iv)

(-1)
(v)

3

Question 17

17.

If a number has 5 zeros at the end, its square has how many zeros?

(i)

11
(ii)

12
(iii)

7
(iv)

10
(v)

9

Question 18

18.

Find the square root of
9284.3900

(i)

98.3555
(ii)

97.3555
(iii)

94.3555
(iv)

95.3555
(v)

96.3555

Question 19

19.

The solution of
√

11
lies between

(i)

5 and 6
(ii)

4 and 5
(iii)

1 and 2
(iv)

2 and 3
(v)

3 and 4

Question 20

20.

Find the
cube root
of
(
-1
64
)

(i)

(
-1
6
)
(ii)

(
-1
4
)
(iii)

(
-1
2
)
(iv)

(
-3
4
)
(v)

1
4

Question 21

21.

Find the smallest perfect square which is divisible by each of the numbers 15,8,18

(i)

3600
(ii)

5400
(iii)

7200
(iv)

3602
(v)

2881

Question 22

22.

The solution of
√

15
lies between

(i)

3.9 and 4.0
(ii)

4.0 and 4.1
(iii)

3.6 and 3.7
(iv)

3.8 and 3.9
(v)

3.7 and 3.8

Question 23

23.

The solution of
√

15
lies between

(i)

3.871 and 3.872
(ii)

3.870 and 3.871
(iii)

3.874 and 3.875
(iv)

3.872 and 3.873
(v)

3.873 and 3.874

Question 24

24.

(i)

7200
(ii)

7202
(iii)

720
(iv)

72000
(v)

7198

Question 25

25.

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

(i)

10000
(ii)

9999
(iii)

9998
(iv)

10001
(v)

10002

Assignment Key