Last updated on September 20th, 2023 at 02:49 pm
Class 6 Chapter 2 Whole Numbers
NCERT Solutions for Class 6 Maths Chapter 2 | NCERT class 6 Maths solutions provided for students by our expert teachers .
Class 6 Maths Chapter 2 Exercise 2.1 Solutions
- Write the next three natural numbers after 10999.
Solution :- Next 3 Natural Numbers Are 11000,11001,11002
- Write the three whole numbers occurring just before 10001.
Solution :- Next 3 Whole Numbers Are 10000,9999,9998
- Which is the smallest whole number?
Solution :- Zero [0] is the smallest whole number.
- How many whole numbers are there between 32 and 53?
Solution :- there are total 20 whole numbers are there in between 32 and 53.
- Write the successor of:
(a) 2440701 (b) 100199 (c) 1099999 (d) 2345670
Solution :-
2440701 + 1 = Â 2440702
100199 + 1 = 100200
1099999 + 1 = 1100000
2345670 + 1 = 2345671
- Write the predecessor of:
(a) 94 (b) 10000 (c) 208090 (d) 7654321
Solution :-
predecessor of 94 = 94-1=93
predecessor of 10000 = 10000-1 = 9999
predecessor of 208090 = 208090-1=208089
predecessor of 7654321 =Â 7654321-1 = 7654320
- 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.
530, 503 (b) 370, 307 (c) 98765, 56789 (d) 9830415, 10023001
Solution:-
(a) 530 > 503; So, On the number line, 503 appears to the left of 530.
(b) 370 > 307; So, On the number line, 307 appears to the left of 370.
(c) 98765 > 56789; So, On the number line, 56789 appears to the left of 98765.
(d) 9830415 < 10023001; So, On the number line, 9830415 appears to the left of 10023001.
- Which of the following statements are true (T) and which are false (F):
(a) Zero is the smallest natural number. [ F ]
(b) 400 is the predecessor of 399. [ F ]
(c) Zero is the smallest whole number. [ T ]
(d) 600 is the successor of 599. [ T ]
(e) All-natural numbers are whole numbers. [ T ]
(f) All whole numbers are natural numbers. [ F ]
(g) The predecessor of a two-digit number is never a single digit number. [ F ]
(h) 1 is the smallest whole number. [ F ]
(i) The natural number 1 has no predecessor. [ T ]
(j) The whole number 1 has no predecessor. [ F ]
(k) The whole number 13 lies between 11 and 12. [ F ]
(l) The whole number 0 has no predecessor. [ T ]
(m) The successor of a two-digit number is always a two-digit number. [ F ]
Chapter 2 – Whole Numbers (Ex. 2.2)
- Find the sum by suitable rearrangement:
(a) 837 + 208 + 363
Solution :-
If we use associative property then we add 837+363 first
- [837+363] + 208
- 1200+208 = 1408
(b) 1962 + 453 + 1538 + 647
With associative property then we add
- [1962+1538]+[453+647]
- 3500+1100 = 4600
The term “associative property” refers to the grouping of numbers.
- Find the product by suitable arrangement:
| (a) 2 x 1768 x 50Â
Solution – [2 x 50] x 1768 100 x 1768 = 176800 |
(b) 4 x 166 x 25
Solution – [4 x 25 ] x 166 100 x 166 = 16600 |
| (c) 8 x 291 x 125
Solution – [125 x 8 ] x 291
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