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) 41^{2} – 40^{2} = ……

(vi) There are (2n + 1) numbers (RBSESolutions.com) in between n^{2} 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 10^{2} and 11^{2}.

(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 m^{2}. Then (RBSESolutions.com) find the side of the field.

Solution:

Area of field = 1089 m^{2}

∴ 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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