NCERT Solutions for Class 6 Maths Chapter 2 Whole Numbers Ex 2.1

NCERT Solutions for Class 6 Maths Chapter 2 Whole Numbers Ex 2.1 are the part of NCERT Solutions for Class 6 Maths (Rationalised Contents). Here you can find the NCERT Solutions for Class 6 Maths Chapter 2 Whole Numbers Ex 2.1.

NCERT Solutions for Class 6 Maths Chapter 2 Whole Numbers Ex 2.1

NCERT Solutions for Class 6 Maths Chapter 2 Whole Numbers Ex 2.1 (Rationalised Contents)

Ex 2.1 Class 6 Maths Question 1.

Write the next three natural numbers after 10999.

Solution:
The next three natural numbers after 10999 are 11000, 11001 and 11002.

Ex 2.1 Class 6 Maths Question 2.

Write three whole numbers occurring just before 10001.

Solution:

Three whole numbers occurring just before are:
10001 – 1 = 10000
10000 – 1 = 9999
9999 – 1 = 9998
Hence, three whole numbers occurring just before 10001 are 10000, 9999 and 9998.

Ex 2.1 Class 6 Maths Question 3.

Which is the smallest whole number?

Solution:
The smallest whole number is 0.

Ex 2.1 Class 6 Maths Question 4.

How many whole numbers are there between 32 and 53?

Solution:
The whole numbers between 32 and 53 are 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51 and 52.

The number of whole numbers between 32 and 53 = 53 – 32 – 1 = 20

Ex 2.1 Class 6 Maths Question 5.

Write the successor of:
(a) 2440701
(b) 100199
(c) 1099999
(d) 2345670

Solution:
(a) The successor of 2440701 is 2440701 + 1 = 2440702
Hence, the successor of 2440701 is 2440702.
(b) The successor of 100199 is 100199 + 1 = 100200
Hence, the successor of 100199 is 100200.
(c) The successor of 1099999 is 1099999 + 1 = 1100000
Hence, the successor of 1099999 is 1100000.
(d) The successor of 2345670 is 2345670 + 1 = 2345671
Hence, the successor of 2345670 is 2345671.

Ex 2.1 Class 6 Maths Question 6.

Write the predecessor of:
(a) 94
(b) 10000
(c) 208090
(d) 7654321

Solution:
(a) The predecessor of 94 is 94 – 1 = 93
Hence, the predecessor of 94 is 93.
(b) The predecessor of 1000 is 10000 – 1 = 9999
Hence, the predecessor of 10000 is 9999.
(c) The predecessor of 208090 is 208090 – 1 = 208089
Hence, the predecessor of 208090 is 208089.
(d) The predecessor of 7654321 is 7654321 – 1 = 7654320
Hence, the predecessor of 7654321 is 7654320.

Ex 2.1 Class 6 Maths 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

Solution:
We know that the smaller number is always on the left side of the greater number on the number line.
(a) 530, 503
Clearly, 503 is smaller than 530.
Thus, 503 will be on the left side of 530 on the number line.
Hence, 503 < 530 or 530 > 503

(b) 370, 307
Clearly, 307 is smaller than 370.
Thus, 307 will be on the left side of 370 on the number line.
Hence, 307 < 370 or 370 > 307

(c) 98765, 56789
Clearly, 56789 is smaller than 98765.
Thus, 56789 will be on the left side of 98765 on the number line.
Hence, 56789 < 98765 or 98765 > 56789

(d) 9830415, 10023001
Clearly, 9830415 is smaller than 10023001.
Thus, 9830415 will be on the left side of 10023001 on the number line.
Hence, 9830415 < 10023001 or 10023001 > 9830415

Ex 2.1 Class 6 Maths 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.

Solution:
(a) This statement is false (F).
(b) This statement is false (F).
(c) This statement is true (T).
(d) This statement is true (T).
(e) This statement is true (T).
(f) This statement is false (F).
(g) This statement is false (F).
(h) This statement is false (F).
(i) This statement is true (T).
(J) This statement is false (F).
(k) This statement is false (F).
(l) This statement is true (T).
(m) This statement is false (F).