NCERT Solutions For Class 6 Maths Chapter 2

Whole Number

NCERT Solutions For Class 6 Maths Chapter 2 Exercise 2.3

Question 2:

Which of the following will not represent zero:
(a) 1 + 0
(b) 0 × 0
(c) 0 / 2
(d) (10 – 10) / 2

Answer

(a) 1 + 0 = 1
it does not represent zero

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.

Answer 2:

Yes,if product of two whole numbers is zero then one of them is zero
Ex: 0 × 3 = 0 and 15 × 0 = 0
If both number are zero then the result also be zero
Ex: 0 × 0 = 0

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.

Answer 3:

If the product of two whole numbers is 1, both the numbers should be equal to 1
Ex: 1 × 1 = 1
But 1 × 5 = 5
So, the product of two whole numbers will be 1, then both numbers to be multiplied are 1

Question 4:

Find using distributive property:
(a) 728 × 101
(b) 5437 × 1001
(c) 824 × 25
(d) 4275 × 125
(e) 504 × 35

Answer 4:

Question 5:

Study the pattern:
1 × 8 + 1 = 9
12 × 8 + 2 = 98
123 × 8 + 3 = 987
1234 × 8 + 4 = 9876
12345 × 8 + 5 = 98765
Write the next two steps. Can you say how the pattern works?
(Hint: 12345 = 11111 + 1111 + 111 + 11 + 1)

Answer 5:

123456 × 8 + 6 = 987654
1234567 × 8 + 7 = 9876543
1 × 8 + 1 = 9
12 × 8 + 2 = 98
123 × 8 + 3 = 987
1234 × 8 + 4 = 9876
12345 × 8 + 5 = 98765
123456 × 8 + 6 = 987654
1234567 × 8 + 7 = 9876543