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4. Division

 Reciprocal

Reciprocal is the multiplier of the given rational number which gives the product as 1.

Reciprocal of is

 Product of Reciprocal

If we multiply the reciprocal of the rational number with that rational number then the product will
always be 1.

× = 1

 Division of a Rational Number with another Rational Number

To divide a rational number with another rational number we have to multiply the reciprocal of the

rational number with the other rational number.
Example:

Check your understanding: ( NCERT Exercise – 9.2 )

Q1. Find the sum :
(i) 5 + ( −11 )
4 4

Answer:
5
(ii) −3 +
−11 9