RBSE Solutions for Class 7 Maths Chapter 3 Square and Square Root Additional Questions

RBSE Solutions for Class 7 Maths Chapter 3 Square and Square Root Additional Questions is part of RBSE Solutions for Class 7 Maths. Here we have given Rajasthan Board RBSE Class 7 Maths Chapter 3 Square and Square Root Additional Questions.

Board	RBSE
Textbook	SIERT, Rajasthan
Class	Class 7
Subject	Maths
Chapter	Chapter 3
Chapter Name	Square and Square Root
Exercise	Additional Questions
Number of Questions	25
Category	RBSE Solutions

Rajasthan Board RBSE Class 7 Maths Chapter 3 Square and Square Root Additional Questions

Multiple Choice Questions

Question 1
Find the sum without (RBSESolutions.com) operation 1 + 3 + 5
(A) 9
(B) 8
(C) 7
(D) 6

Question 2
Square root of 144 is
(A) 13
(B) 12
(C) 10
(D) 8

Question 3
Square of 11 is
(A) 121
(B) 122
(C) 123
(D) 124

Question 4
In the following which is not (RBSESolutions.com) a perfect square number :
(A) 625
(B) 100
(C) 441
(D) 449

Question 5
if \(\sqrt { 3 }\) = 1.732 Then what is the value of \(\frac { 1 }{ \sqrt { 3 } }\).
(A) 0.617
(B) 0.313
(C) 0.577
(D) 0.173

Question 6
Square root (RBSESolutions.com) of 7921 will be
(A) 89
(B) 88
(C) 70
(D) 81

Question 7
Value of \(\sqrt { 1\frac { 9 }{ 16 } }\) will be –
(A) \(\sqrt { 1\frac { 3 }{ 4 } }\)
(B) \(\sqrt { 1\frac { 1 }{ 4 } }\)
(C) 1125
(D) None of these

Question 8
Which smallest number is required to (RBSESolutions.com) divide 216 so that remainder is a perfect square?
(A) 3
(B) 4
(C) 6
(D) 9

Answers:
1. (A), 2. (B), 3. (A), 4. (D), 5. (C), 6. (A), 7. (B), 8. (C)

Fill in the blanks:
(i) 1 + 3 + …….. + 7 = 16
(ii) Square of 4 = …………
(iii) Square root of 64 = ………..
(iv) …………. is the inverse process of square.
(v) 41² – 40² = ……
(vi) There are (2n + 1) numbers (RBSESolutions.com) in between n² and …………….
Answers :
(i) 5,
(ii) 16,
(iii) 8,
(iv) square root,
(v) 81,
(vi) (n + 1)²

True/False
(i) Square of 2 = 8
(ii) Square root of 64 = 8
(iii) There are 21 numbers (RBSESolutions.com) between 10² and 11².
(iv) Square of 56 = 3236
(v) Square root of 25 = 5
Answer:
(i) False
(ii) True
(iii) True
(iv) False
(v) True

Very Short Answer Type Questions

Question 1
Find the square root of 144 by (RBSESolutions.com) division method.
Solution:
∴ \(\sqrt { 144 }\) = 12

Question 2
Is 9, 40,41 is a Pythagorean triplets.
Answer:
(9)² : (40)² = 81 + 1600 = 1681 = (41)²
so (9)² + (40)² = (41)²
9, 40, 41 is a pythagorean triplets

Short/Long Answer Type Questions

Question 1
Which smallest number should be (RBSESolutions.com) added to 3986 to make perfect square.
Answer:
\(\sqrt { 3986 }\) = 63.14
∴ Required number = (64)² – 3986 = 4096 – 3986 = 110

Question 2
Find the value of \(\sqrt { 248+\sqrt { 51+\sqrt { 169 } } }\)
Solution:

Question 3
Area of square field is 1089 m². Then (RBSESolutions.com) find the side of the field.
Solution:
Area of field = 1089 m²
∴ Side of field = \(\sqrt { 1089 }\) = 33

∴ Length of side of field = 33 m.

Question 4
Find the smallest number required to (RBSESolutions.com) subtract from 1989 to make perfect square and find also the square root of that numbers.
Solution:
On finding of square root of 1989
we see that 53 is more than 1989
∴ subtracting 53 from 1989

1989 – 53 = 1936
∴ \(\sqrt { 1936 }\) = 44

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