Solutions For All Chapters Maths Class 6
NCERT Solutions for Class 6 Maths Chapter 2 Whole Numbers Exercise 2.3
Ex 2.3 Class 6 Maths Question 1.
Which of the following will not represent zero:
(a) 1 + 0
(b) 0 x 0
(c) 0\2
(d) 10-10\ 2
Solution:
(a) 1 + 0 = 1 ≠ 0, does not represent zero.
(b) 0 x 0 = 0, represents zero
(c) 0/2 = 0, represents zero.
(d) 10-10/2 = 0/2 = 0 represents zero.
Ex 2.3 Class 6 Maths Question 2.
If the product of two whole numbers is zero, can we say that one or both of them will be zero? Justify through examples.
Solution:
Yes, Examples:
5 x 0 = 0
0 x 8 = 0
0 x 0 = 0
Ex 2.3 Class 6 Maths Question 3.
If the product of two whole numbers is 1, can we say that one or both of them will be 1? Justify through examples.
Solution:
This is only true, when each of the number are 1.
1 x 1 = 1
Ex 2.3 Class 6 Maths Question 4.
Find using distributive property:
(а) 728 x 101
(b) 5437 x 1001
(c) 824 x 25
(d) 4275 x 125
(e) 504 x 35
Solution:
(a) 728 x 101 = 728 x (100 + 1)
= 728 x 100 + 728 x 1
= 72800 + 728
= 73528
(b) 5437 x 1001 = 5437 x (1000 + 1)
= 5437 x 1000 + 5437 x 1
= 5437000 + 5437
= 5442437
(c) 824 x 25 = 824 x (20 + 5)
= 824 x 20 + 824 x 5
= 16480 + 4120
= 20600
(d) 4275 x 125 = 4275 x (100 + 20 + 5)
= 4275 x 100 + 4275 x 20 + 4275 x 5
= 427500 + 85500 + 21375
= 534375
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