EduSahara™ Worksheet

Question 1

1.

Identify the Pythagorean triplet whose middle number is 15

(i)

{9,15,14}
(ii)

{9,15,16}
(iii)

{10,15,17}
(iv)

{7,15,16}
(v)

{8,15,17}

Question 2

2.

Find the square root of
407.900

(i)

20.197
(ii)

21.197
(iii)

18.197
(iv)

22.197
(v)

19.197

Question 3

3.

Find the
cube root
of
1
8

(i)

1
2
(ii)

(
-1
2
)
(iii)

1
(iv)

1
4
(v)

3
2

Question 4

4.

Express
7 2
as the sum of two consecutive integers

(i)

26 + 23
(ii)

24 + 25
(iii)

25 + 26
(iv)

23 + 24
(v)

22 + 27

Question 5

5.

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

(i)

8
(ii)

5
(iii)

6
(iv)

7
(v)

4

Question 6

6.

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

(i)

9800
(ii)

9802
(iii)

9804
(iv)

9799
(v)

9801

Question 7

7.

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

(i)

14
(ii)

19
(iii)

15
(iv)

17
(v)

16

Question 8

8.

The smallest number by which 200 must be multiplied so that the product is a perfect cube is?

(i)

6
(ii)

2
(iii)

4
(iv)

5
(v)

8

Question 9

9.

Identify the Pythagorean triplet whose smallest number is 10

(i)

{10,26,28}
(ii)

{10,26,27}
(iii)

{10,24,26}
(iv)

{10,25,28}
(v)

{10,25,27}

Question 10

10.

Find the value of
11 3
+
10 3

(i)

2330
(ii)

2331
(iii)

2334
(iv)

2332
(v)

2329

Question 11

11.

The solution of
√

12
lies between

(i)

3.466 and 3.467
(ii)

3.462 and 3.463
(iii)

3.463 and 3.464
(iv)

3.464 and 3.465
(v)

3.465 and 3.466

Question 12

12.

Find the value of
21 3
−
20 3

(i)

1263
(ii)

1258
(iii)

1260
(iv)

1261
(v)

1262

Question 13

13.

(i)

878
(ii)

880
(iii)

88
(iv)

8800
(v)

882

Question 14

14.

Find the number of numbers between
3 2
and
4 2

(i)

5
(ii)

7
(iii)

6
(iv)

3
(v)

8

Question 15

15.

How many digits are there in the square root of 597529?

(i)

1
(ii)

5
(iii)

2
(iv)

4
(v)

3

Question 16

16.

Identify the Pythagorean triplet whose largest number is 26

(i)

{9,25,26}
(ii)

{11,23,26}
(iii)

{10,24,26}
(iv)

{8,22,26}
(v)

{12,25,26}

Question 17

17.

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

(i)

9999
(ii)

10001
(iii)

10003
(iv)

9997
(v)

10000

Question 18

18.

Find the
cube root
of
27

(i)

3
(ii)

1
(iii)

4
(iv)

2
(v)

5

Question 19

19.

How many digits are there in the square root of 784?

(i)

4
(ii)

2
(iii)

3
(iv)

0
(v)

1

Question 20

20.

Find the least number that must be added to 832 to get a perfect square?

(i)

10
(ii)

7
(iii)

8
(iv)

11
(v)

9

Question 21

21.

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

(i)

964
(ii)

962
(iii)

959
(iv)

960
(v)

961

Question 22

22.

Identify the Pythagorean triplet whose one of the numbers is 14

(i)

{14,48,50}
(ii)

{14,50,52}
(iii)

{14,49,51}
(iv)

{14,50,51}
(v)

{14,49,52}

Question 23

23.

Find the smallest perfect square which is divisible by each of the numbers 9,14,18

(i)

1766
(ii)

1764
(iii)

3528
(iv)

1765
(v)

1134

Question 24

24.

Which of the following is a perfect square?

(i)

16
(ii)

2210
(iii)

2028
(iv)

1295
(v)

526

Question 25

25.

The solution of
√

5
lies between

(i)

2.25 and 2.26
(ii)

2.22 and 2.23
(iii)

2.21 and 2.22
(iv)

2.24 and 2.25
(v)

2.23 and 2.24

Assignment Key