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CBSE Class 8 Maths Worksheet

Squares and square roots

Find the square root of 729 by repeated subtraction

Find numbers which are not perfect squares.

A) 4225 B) 5625 C) 5225 D) 3025

Find the least number that must be added to 1050 so as to get a perfect square. Also find the square root of the perfect square.

Find numbers which are not perfect squares.

A) 121 B) 196 C) 139 D) 144

Find the smallest whole number by which it should be multiplied so as to get a perfect square. Also find the square root of the square number so obtained. 1458

Find the square root of 20.25.

Find the cube root of 1331*27*64

111

132

11*3*8

The square of 0.4 is 0.16

A) True B) False

Find the smallest square number that is divisible by each of the numbers 16, 30 and 40.

10.

5.sq + ____ .Sq.+ 30.Sq = 31.Sq

11.

Fill in the blanks: In general, if a natural number a can be expressed as x2, where n is also a natural number, then a is a ________.

12.

Find the square root of 75.69.

13.

Choose the correct option: 196 is perfect square root of _____

A) 12 B) 13 C) 14 D) 15

14.

Find the square root of 22500 by repeated subtraction

15.

Find the smallest whole number by which it should be divided so as to get a perfect square. Also find the square root of the square number so obtained. 2645

16.

The students of Collage donated Rs 2401 in all, for Disaster management for National Relief. Each student donated as many rupees as the number of students in the class. Find the number of students in the class.

17.

Find the square root of 12.96.

18.

Find the square root of 94.09

19.

Which of the following can be the square of a natural number ‘n’?

sum of the squares of first n natural numbers

sum of the first n natural numbers

sum of first (n – 1) natural numbers

sum of first ‘n’ odd natural numbers

20.

Choose the correct option: What is the perfect square of 35?

A) 1225 B) 1230 C) 1235 D) 1245

CBSE Class 8 Maths Worksheet

Squares and square roots

Answers

Option C

4.5

Option B

Option A

7200

10.

11.

Square Number

12.

8.6999999999999993

13.

Option C

14.

150

15.

16.

17.

3.6

18.

9.6999999999999993

19.

Option D

20.

Option A

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