# NCERT Solutions for Class 6 Maths Chapter 2

NCERT Solutions for Class 6 Maths Chapter 2 Whole Numbers Exercise 2.1, Exercise 2.2 and Exercise 2.3 in PDF English and Hindi Medium updated for new academic session 2020-2021 based on new NCERT Books for 2020-2021.

NCERT Solutions of Prashnavali 2.1, Prashnavali 2.2 and Prashnavali 2.3 in Hindi Medium also available to use free. Video Format of each exercises are also available free which is updated for the new academic session 2020-2021 based on new NCERT Books 2020-21. All the solutions given below can be access as a PDF file to use it offline. The Study online option is also given to use it without download.

## NCERT Solutions for Class 6 Maths Chapter 2

 Class: 6 Maths (English and Hindi Medium) Chapter 2: Whole Numbers

• ### Class 6 Maths Chapter 2 in Hindi Medium

#### Class 6 Maths Chapter 2 Exercise 2.1 Solution and Explanation

Class 6 Maths Chapter 2 Exercise 2.1 Explanation
Class 6 Maths Chapter 2 Exercise 2.1 Solutions

#### Class 6 Maths Chapter 2 Exercise 2.2 Solution and Explanation

Class 6 Maths Chapter 2 Exercise 2.2 Explanation
Class 6 Maths Chapter 2 Exercise 2.2 Solutions

#### Class 6 Maths Chapter 2 Exercise 2.3 Solution and Explanation

Class 6 Maths Chapter 2 Exercise 2.3 Explanation
Class 6 Maths Chapter 2 Exercise 2.3 Solutions

In 6 Maths Chapter 2 Whole Numbers (The natural numbers along with zero form the collection of whole numbers.), we will study about the properties of whole numbers using predecessor and successor of the given numbers. More to know:
All natural numbers also whole numbers.
All whole numbers, except 0, are also natural numbers.
Zero is the smallest whole number.
We can’t find the greatest whole number.
Properties of Whole numbers:
Whole numbers are closed under addition and also under multiplication.
Whole numbers are not closed under subtraction and under division.
Division of a whole number by 0 is not defined.
Addition and multiplication are commutative for whole numbers.
During the representation of a number on number line, addition corresponds to moving to the right on the number line, whereas multiplication corresponds to making jumps of equal distance starting from zero.

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### Important Questions on 6 Maths Chapter 2

Write the next three natural numbers after 10999.
10,999 + 1 = 11,000
11,000 + 1 = 11,001
11,001 + 1 = 11,002
उपयुक्त क्रम में लगाकर योग ज्ञात कीजिए: 837 + 208 + 363
837 + 208 + 363
= (837 + 363) + 208
= 1200 + 208
= 1408
Write the three whole numbers occurring just before 10001.
10,001 – 1 = 10,000
10,000 – 1 = 9,999
9,999 – 1 = 9,998
Which is the smallest whole number?
‘0’ (zero) is the smallest whole number.
How many whole numbers are there between 32 and 53?
53 – 32 – 1 = 20
There are 20 whole numbers between 32 and 53.
किसी टैक्सी-ड्राइवर ने अपनी गाड़ी की पेट्रोल टंकी में सोमवार को 40 लीटर पेट्रोल भरवाया। अगले दिन, उसने टंकी में 50 लीटर पेट्रोल भरवाया। यदि पेट्रोल का मूल्य ₹ 44 प्रति लीटर था, तो उसने पेट्रोल पर कुल कितना व्यय किया?
सोमवार को भरवाया गया पेट्रोल = 40 लीटर
अगले दिन भरवाया गया पेट्रोल = 50 लीटर
कुल भरवाया गया पेट्रोल = 90 लीटर

अब,
1 लीटर पेट्रोल का मूल्य = ₹ 44
इसलिए, 90 लीटर पेट्रोल का मूल्य = 44 x 90
= 44 x (100 – 10)
= 44 x 100 – 44 x 10
= 4400 – 440
= ₹ 3960

अतः, उसने पेट्रोल पर कुल ₹ 3960 व्यय किया।

कोई दूधवाला एक होटल को सुबह 32 लीटर दूध देता है और शाम को 68 लीटर दूध देता है। यदि दूध का मूल्य ₹15 प्रति लीटर है, तो दूधवाले को प्रतिदिन कितनी धनराशि प्राप्त होगी?
सुबह के समय दिया गया दूध = 32 लीटर
शाम के समय दिया गया दूध = 68 लीटर
कुल दूध = 32 + 68 = 100 लीटर

अब,
1 लीटर दूध से प्राप्त धनराशि = ₹15
इसलिए, 100 लीटर दूध से प्राप्त धनराशि
= 15 x 100
= ₹1500

अतः, दूधवाले को प्रतिदिन ₹1500 प्राप्त होंगे।

Write the successor of 2440701.
Successor of 2440701 is 2440701 + 1 = 2440702.
Write the predecessor of 94.
The predecessor of 94 is 94 – 1 = 93.
If the product of two whole numbers is zero, can we say that one or both of them will be zero? Justify through examples.
Yes, if we multiply any number with zero the resultant product will be zero.

Examples:
2 x 0 = 0,
5 x 0 = 0,
9 x 0 = 0

If both numbers are zero, then the result also be zero.
0 x 0 = 0

If the product of two whole number is 1, can we say that one or both of them will be 1? Justify through examples.
If only one number be 1 then the product cannot be 1.

Examples:
5 x 1 = 5,
4 x 1 = 4,
8 x 1 = 8

If both number are 1, then the product is 1
1 x 1 = 1              