CBSE#!#Properties of Whole Numbers

The sum of any two whole numbers is a whole number? This property of whole number is referred to as

Property 2 If a is any whole number then a-:1=a.

Property 3 If a any whole number other than zero then a-0=a but 0-a is not defined.

Find the sum, using the associative property of addition of whole numbers. 63 + 137 + 56

Find the sum, using the associative property of addition of whole numbers. 45 + 118 + 82

Find the sum, using the associative property of addition of whole numbers. 73 + 47 + 53

Property 4 The subtraction of whole numbers is not associative.That is if abc are three whole numbers then in general a-(b-c) is not equal to (a-b)-c

Property 2 The subtraction of whole numbers is not commutative that is if a and b are two whole numbers then in general a-b is not equal to (b-a)

Property 3 Each whole number (except zero) has one and only one predecessor.The predecessor of a whole number just on its on the the number line.