To find sum of three numbers 14, 27 and 13, we can have two ways:
(a) We may first add 14 and 27 to get 41 and then add 13 to it to get the total sum 54 or
(b) We may add 27 and 13 to get 40 and then add 14 to get the sum 54. Thus, (14 + 27) + 13 = 14 + (27 + 13)
This can be done for any three numbers. This property is known as the associativity of addition of numbers. Express this property which we have already studied in the chapter on Whole Numbers, in a general way, by using variables a, b, and c.

Solution:

Let’s write the associative property of addition using the given three numbers a, b and c.

Associative property of addition of numbers = (a + b) + c = a + (b + c)

Here a, b and c are any three whole numbers.

NCERT Solutions Class 6 Maths Chapter 11 Exercise 11.2 Question 5

To find sum of three numbers 14, 27 and 13, we can have two ways:(a) We may first add 14 and 27 to get 41 and then add 13 to it to get the total sum 54 or(b) We may add 27 and 13 to get 40 and then add 14 to get the sum 54. Thus, (14 + 27) + 13 = 14 + (27 + 13)This can be done for any three numbers. This property is known as the associativity of addition of numbers. Express this property which we have already studied in the chapter on Whole Numbers, in a general way, by using variables a, b, and c.

Summary:

The associative property of addition of any three whole numbers a, b and c can be expressed as (a + b) + c = a + (b + c).

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