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CBSE Class 7 Maths Notes for Chapter 9- Rational Numbers

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CHAPTER 9 RATIONAL NUMBERS
 
A rational number is a number that can be expressed in the form of   where p and q are integers and q≠0.
 
EQUIVALENT RATIONAL NUMBERS
By multiplying the numerator and denominator of a rational number by the same non-zero integer, we obtain another rational number equivalent to the given rational number.
 
 
RATIONAL NUMBERS IN STANDARD FORM
 
A number is said to be in standard form if its denominator is a positive integer and the numerator and denominator have no common factor other than 1.
 
 
COMPARISON OF RATIONAL NUMBERS
 
Make the denominators equal and compare the numerators. The one with the greater numerator is the greater rational number.
 
 
OPERATIONS OF RATIONAL NUMBERS
 
Operations on rational numbers are done just like fractions.
 

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