RBSE Solutions for Class 8 Maths Chapter 5 Vedic Mathematics Additional Questions is part of RBSE Solutions for Class 8 Maths. Here we have given Rajasthan Board RBSE Class 8 Maths Chapter 5 Vedic Mathematics Additional Questions.

Board |
RBSE |

Textbook |
SIERT, Rajasthan |

Class |
Class 8 |

Subject |
Maths |

Chapter |
Chapter 5 |

Chapter Name |
Vedic Mathematics |

Exercise |
Additional Questions |

Number of Questions |
13 |

Category |
RBSE Solutions |

## Rajasthan Board RBSE Class 8 Maths Chapter 5 Vedic Mathematics Additional Questions

**I. Objective type Questions**

Question 1.

How many groups makes when two digit number is multiplied by two digit number

(a) 1

(b) 2

(c) 3

(d) 4

Question 2.

How many groups makes when three digit number is multiplied by three digit number

(a) 3

(b) 5

(c) 6

(d) 9

Question 3.

If base is 10 and sub-base is 30 then what sub-base digit will be

(a) 3

(b) 2

(c) 1

(d) 43

Question 4.

Sub-base digit is calculated as

(a) Base ÷ Sub-base

(b) Sub-base – Base

(c) Sub-base ÷ Base

(d) Base – Sub-base

Question 5.

In multiplication process by Urdhva(RBSESolutions.com)Tiryagbhyam, the number of groups is known by

(a) (2n – 1)

(b) (2n + 2)

(c) (2n + 1)

(d) (2n – 2)

Question 6.

If the number is 22 and the base is 20, then the deviation is

(a) 10

(b) 20

(c) 2

(d) – 2

Answer

1. (c)

2. (b)

3. (a)

4. (c)

5. (a)

6. (c).

**II. Short Answer Type Questions**

Question 1.

Find the product of following

(i) 98 x 98

(ii) 102 x 102

Solution

(i) 98 x 98

Base = 10

Sub-base = 9 x 10 = 90

Sub-base digit = 90 ÷ 10 = 9

Deviation(RBSESolutions.com)from Sub-base = 98 – 90 = + 8

98 – 90 = + 8

Therefore, the required product of 98 x 98 will be 9604

(ii) 102 x 102

Base = 10

Sub-base = 10 x 10 = 100

Sub-base digit = 100 ÷ 10 = 10

Deviation from Sub-base = 102 – 100 = + 2

102 – 100 = + 2

Therefore, the required product of 102 x 102 will be 10404.

Question 2.

Find the cube of 103.

Solution

Base = 100, Deviation = + 03

(103)^{3} = 103 + 2 x 03 / 3 x (03)^{2} / (03)^{3}

= 103 + 6 / 27 / 27

= 1092727

Question 3.

Find the cube of 96.

Solution

Base = 100, Deviation = (- 04)

(96)^{3} = 96 + 2 x (- 04)/3 x (- 04)^{2}/(- 04)^{3}

= 96 – 08 / 3 x 16 / – 64

= 88 / 48 / – 64

= 88 / 48 /_{1} – 64

= 88 / 47 / 100 – 64

= 88 / 47 / 36

= 884736

Question 4.

Find the cube of 15.

Solution

Base = 10, Deviation = + 5

Then,

(15)^{3} = 15 + 2 x 5 / 3 x 5^{2} / 5^{3}

= 15 + 10 / 75 / 125

= 25 / 75 / 12^{5}

= 25 /_{8} 7 / 5

= 33/7/5

= 3375

Question 5.

Find the value of 101 x 102 x 103 by applying ‘nikhilam’ formula.

Solution

Product(RBSESolutions.com)by ‘nikhilam’ formula Base = 100

= 106 / 11 / 06

= 1061106

Question 6.

Multiply by Urdhwtirygbhyaam method

426 x 351

Solution

Hence the required product 426 x 351

= 149526

Question 7.

Multiply by(RBSESolutions.com)using Nikhilam formula :

22 x 23

Solution

Base = 10

Sub-base = 2 x 10 = 20

Sub-base digit = 20 ÷ 10 = 2

Deviation from sub-base = 22 – 20 = 2,

23 – 20 = 3

Hence the required product of 22 x 23 = 506

Question 8.

Multiply by using Nikhilam formula

103 x 103 x 103

Solution

Base = 100

= 103 + 3 + 3 / 9 + 9 + 9 / 27

= 109 / 27 / 27

= 1092727

Question 9.

Divide by using Dhwajank Method 18542 ÷ 52

Solution

∴Quotient = 356 and Remainder = 30

Question 10.

Solve 415 x 132 using ‘Urdhavtirgbhyaam’ sutra.

Solution

415 x 132

Step 1. 415 is multiplicand and 132 is multi-plier. Writing in the form of multiplication.

Step 2. Number of groups will be 5 in three digit numbers.

= 54780

Question 11.

Solve 3732 ÷ 42 by ‘Dhwajank’ Sutra.

Solution

3732 ÷ 42

Hint—(i) 37 ÷ 4, first digit of quotient = 8, remainder = 5

(ii) New dividend = 53

Modified dividend = 53 – 8 x 2 = 37

(iii) 37 ÷ 4, second digit of quotient = 8, remainder = 5

(iv) New dividend = 52

Modified(RBSESolutions.com)dividend = 52 – 8 x 2 = 36

= Final remainder

∴ Quotient = 88, Remainder = 36.

We hope the given RBSE Solutions for Class 8 Maths Chapter 5 Vedic Mathematics Additional Questions will help you. If you have any query regarding Rajasthan Board RBSE Class 8 Maths Chapter 5 Vedic Mathematics Additional Questions, drop a comment below and we will get back to you at the earliest.

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