## Book: RD Sharma - Mathematics

### Chapter: 1. Rational Numbers

#### Subject: Maths - Class 8th

##### Q. No. 2 of Exercise 1.2

Listen NCERT Audio Books to boost your productivity and retention power by 2X.

2
##### Verify associativity of addition of rational numbers i.e., when:(i) (ii) (iii) (iv)

(i) In order to verify this property, let us consider the following expressions:

Verification: + [ + (-)] = + [ - ]

= +

=

=

And,

( + ) + () = ( + ) -

= -

=

=

Therefore,

The associative property of additional of rational numbers has been verified

(ii) In order to verify this property, let us consider the following expressions:

Verification: + [ + (-)] = + [ - ]

= +

=

=

And,

( + ) + () = ( + ) -

= -

=

=

Therefore,

The associative property of additional of rational numbers has been verified

(iii) In order to verify this property, let us consider the following expressions:

Verification: + [ + (-)] = + [ - ]

= -

=

=

And,

(- + ) + () = ( -) -

= -

=

=

Therefore,

The associative property of additional of rational numbers has been verified

(iv) In order to verify this property, let us consider the following expressions:

Verification: -2 + [ + (-)] = -2 + [ - ]

= -2 -

=

=

And,

(-2 +) + () = ( + ) -

= -

=

=

Therefore,

The associative property of additional of rational numbers has been verified

1
2
3
4
5
6