MCQ Questions

Question No. 1

Fill in the blanks:

Answer :

(a) The square of 4 is _________.

(b) 9 is the square of _______.

(c) 4 is the square of ________.

Question No. 2

True or False:

Answer :

(a) The result of 8^2 is 16

(b) The result of 10^2 is 100.

(c) 49 is the square of 9.

Question No. 3

One word answer:

Answer :

(a) What is the square of 11?

(b) What is the square root of 144?

(c) What is the result of 6^2?

Question No. 4

Show that each of the following numbers is a perfect square. Also find the square numbers of the given numbers in each case:

Answer :

(i) 1156

(ii) 2025

(iii) 4761

(iv) 14641

Question No. 5

Which of the following numbers are perfect square?

Answer :

(i) 484

(ii) 625

(iii) 576

(iv) 941

(v) 2500

Question No. 6

Which of the following numbers are perfect squares ?

Answer :

11, 12, 16, 32, 55, 36, 50, 64, 79, 81, 111, 121, 100, 105

Question No. 7

By what least number should the given numbers be multiplied to get a perfect square number? In each case, find the number whose square is the new number :

Answer :

(i) 8820

(ii) 3675

(iii) 605

(iv) 2880

(v) 4056

(vi) 3468

(vii) 7776

Question No. 8

Solve:

Question No. 9

Find the smallest number by which the given number must be divided so that the resulting number is a perfect square :

Answer :

(i) 14283

(ii) 12150

(iii) 7688

Question No. 10

Simplify :

Answer :

Question No. 11

Using the property, evaluate:

Answer :

Question No. 12

Give reasons to show that none of the numbers given below is a perfect square :

Answer :

(b) –160000

(a) 782

(c) 1530

(d) 2357

Question No. 13

State the number of digits in the square roots of the following squares :

Answer :

(a) 848241

(b) 5041

(c) 15129

(d) 529

Question No. 14

Write down the units digits of the following squares :

Answer :

Question No. 15

Find Pythagorean triplets with the smallest number as :

Answer :

(a) 10

(b) 12

Question No. 16

Which of these triplets form Pythagorean triplet?

Answer :

Question No. 17

Find the square root by prime factorisation method :

Answer :

(a) 7,056

(b) 2,91,600

(c) 7,744

(d) 6,084

Question No. 18

Find the square roots of the following numbers by division method :

Answer :

(a) 54,289

(b) 6,889

(c) 8,281

(d) 3,969

Question No. 19

Evaluate :

Answer :

Question No. 20

Find square root of:

Answer :

(a) 0.7225

(b) 156.25

(c) 1.96

(d) 225.6004

Question No. 21

Answer :

Question No. 22

Estimate the square root of the following to the nearest whole numbers :

Answer :

(a) 259

(b) 75

(c) 460

Question No. 23

Find the square–roots of the following decimals :

Answer :

(a) 13.69

(b) 1772.41

(c) 268.96

(d) 46.24

Question No. 24

4 is the square of ________.

Answer :

2

3

4

Question No. 25

25 is the square of _______.

Answer :

3

5

7

Question No. 26

In general, square of a = a^2 = _____ for any number 'a'.

Answer :

a*a

a+a

a/a

Question No. 27

Square numbers are also called ________.

Answer :

perfect cubes

perfect squares

none of these

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