EduSahara™ Worksheet

Question 1

1.

Identify the Pythagorean triplet whose middle number is 63

(i)

{15,63,64}
(ii)

{17,63,62}
(iii)

{18,63,65}
(iv)

{16,63,65}
(v)

{17,63,64}

Question 2

2.

The smallest number by which 256 must be multiplied so that the product is a perfect cube is?

(i)

2
(ii)

3
(iii)

4
(iv)

1
(v)

0

Question 3

3.

The smallest number by which 5000 must be divided so that the quotient is a perfect cube is?

(i)

7
(ii)

2
(iii)

6
(iv)

5
(v)

4

Question 4

4.

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

(i)

15
(ii)

14
(iii)

17
(iv)

18
(v)

16

Question 5

5.

The smallest number by which 20 must be multiplied so that the product is a perfect square is?

(i)

8
(ii)

4
(iii)

3
(iv)

5
(v)

6

Question 6

6.

(i)

8.19
(ii)

1.9
(iii)

0.19
(iv)

0.02
(v)

2.19

Question 7

7.

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

(i)

963
(ii)

962
(iii)

961
(iv)

960
(v)

958

Question 8

8.

Find the least number that must be subtracted from 2425 to get a perfect square?

(i)

21
(ii)

24
(iii)

27
(iv)

25
(v)

23

Question 9

9.

Find the
square root
of
4
25

(i)

2
7
(ii)

0
(iii)

2
5
(iv)

2
3
(v)

4
5

Question 10

10.

Find the cube root of
1728

(i)

144
(ii)

12
(iii)

9
(iv)

15
(v)

147

Question 11

11.

Find the number of numbers between
5 2
and
6 2

(i)

10
(ii)

8
(iii)

9
(iv)

13
(v)

11

Question 12

12.

Find the smallest perfect square which is divisible by each of the numbers 9,12,4

(i)

324
(ii)

36
(iii)

38
(iv)

72
(v)

433

Question 13

13.

The solution of
√

19
lies between

(i)

4.3587 and 4.3588
(ii)

4.3586 and 4.3587
(iii)

4.3590 and 4.3591
(iv)

4.3589 and 4.3590
(v)

4.3588 and 4.3589

Question 14

14.

If a number has 1 zeros at the end, its square has how many zeros?

(i)

0
(ii)

2
(iii)

4
(iv)

1
(v)

3

Question 15

15.

The solution of
√

12
lies between

(i)

3.2 and 3.3
(ii)

3.6 and 3.7
(iii)

3.5 and 3.6
(iv)

3.3 and 3.4
(v)

3.4 and 3.5

Question 16

16.

Find the square root of
761.610

(i)

28.597
(ii)

26.597
(iii)

27.597
(iv)

25.597
(v)

29.597

Question 17

17.

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

(i)

82
(ii)

79
(iii)

81
(iv)

80
(v)

84

Question 18

18.

(i)

71
(ii)

5.1
(iii)

9.1
(iv)

7.1
(v)

0.7

Question 19

19.

Which of the following is not a perfect square?

(i)

225
(ii)

289
(iii)

1225
(iv)

1762
(v)

36

Question 20

20.

Find the
cube root
of
(
-64
27
)

(i)

(
-4
5
)
(ii)

(
-2
3
)
(iii)

-2
(iv)

-4
(v)

(
-4
3
)

Question 21

21.

Find the square root of
1493.6180

(i)

37.6474
(ii)

40.6474
(iii)

36.6474
(iv)

39.6474
(v)

38.6474

Question 22

22.

Find the prime factorization of
544

(i)

2 5

✕

17
(ii)

(-1) 5

✕

17
(iii)

4 5

✕

17
(iv)

2 4

✕

17
(v)

2 5

✕

17 2

Question 23

23.

Find the
square root
of
9

(i)

3
(ii)

4
(iii)

5
(iv)

0
(v)

2

Question 24

24.

Find the prime factorization of
7488

(i)

2 6

✕

3 2

✕

13
(ii)

2 7

✕

3 2

✕

13
(iii)

2 6

✕

3 2

✕

12
(iv)

2 6

✕

3 2

✕

15
(v)

(-1) 6

✕

3 2

✕

13

Question 25

25.

The solution of
√

2
lies between

(i)

1.412 and 1.413
(ii)

1.416 and 1.417
(iii)

1.414 and 1.415
(iv)

1.413 and 1.414
(v)

1.415 and 1.416

Assignment Key