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Chapter 1:Knowing Our Number

Chapter 2:Whole Number

Chapter 3: Playing with Number

Chapter 4:Basic Gemetrical Idea

Chapter 5:Understanding Elementry Shapes

Chapter 6:Intergers

Chapter 7:Fraction

Chapter 8:Decimals

Chapter 9:Data Handling

Chapter 10:Mensuratin

Chapter 11:Algebra

Chapter 12:Ratio and Proportion

Chapter 13:Sysmmetry

NCERT Solutions For Class 6 Maths Chapter 2

Whole Number

NCERT Solutions For Class 6 Maths Chapter 2 Exercise 2.1

Question 1.
Write the next three natural numbers after 10999.
Answer 1:
Next three natural numbers after 10999 are:
10999 + 1=11000
11000 + 1=11001
11001 + 1=11002

Question 2.
Write the three whole numbers occurring just before 10001.
Answer 2:
The three whole numbers occurring just before 10001 are:
10001 – 1=10000
10000 – 1=9999
9999 – 1=9998

Question 3.
Which is the smallest whole number?
Answer
The smallest whole number is (Zero)0.

Question 4.
How many whole numbers are there between 32 and 53?
Answer 4:
(53 – 32) -1 = 21 – 1= 20
there are 20 whole numbers between 32 and 53.
Question 5.
Write the successor of:
(a) 2440701
(b) 100199
(c) 1099999
(d) 2345670
Answer 5:
(a) Successor of 2440701 = 2440701 + 1 = 2440702
(b) Successor of 100199 = 100199 + 1 = 100200
(c) Successor of 1099999 =1099999 +1 = 1100000
(d) Successor of 2345670 = 2345670 + 1 = 2345671
Question 6.
Write the predecessor of:
(a) 94
(b) 10000
(c) 208090
(d) 7654321
Answer 6:
(a) Predecessor of 94 = 94 – 1 = 93
(b) Predecessor of 10000 = 10000 – 1 = 9999
(c) Predecessor of 208090 = 208090 – 1 = 208089
(d) Predecessor of 7654321 =7654321 – 1 = 7654320
Question 7.
In each of the following pairs of numbers, state which whole number is on the left of the other number on the number line. Also write them with the appropriate sign (>, <) between them
(a) 530, 503
(b) 370, 307
(c) 98765, 56789
(d) 9830415, 10023001
Answer 7:
(a) 530 > 503
Therefore 503 lies on the left of 530 on the number line.
(b) 370 > 307
Therefore 307 seem on the left of 370 on the number line.
(c)98765 > 56789
Therefore 56789 seem on the left of 98765 on the number line.
(d) 9830415 > 10023001
Therefore 9830415 seem on the left of 10023001
Question 8.
Which of the following statements are true (T) and which are false (F)?
(a) Zero is the smallest natural number.
(b) 400 is the predecessor of 399.
(c) Zero is the smallest whole number.
(d) 600 is the successor of 599.
(e) All natural numbers are whole numbers.
(f) All whole numbers are natural numbers.
(g) The predecessor of a two digit number is never a single digit number.
(h) 1 is the smallest whole number.
(i) The natural number 1 has no predecessor.
(j) The whole number 1 has no predecessor.
(k) The whole number 13 lies between 11 and 12.
(l) The whole number 0 has no predecessor.
(m) The successor of a two digit number is always a two digit number.
Answer 8:
(a) False (b) False (c) True (d) True (e) True (f) False (g) False (h) False (i) True (j) False (k) False (l) True (m) False