Learn All Concepts of Chapter 1 Class 9 - FREE. Check - Chapter 1 Class 9 Maths

Last updated at Dec. 8, 2016 by Teachoo

Transcript

Example 6 Show that 3.142678 is a rational number. In other words, express 3.142678 in the form π/π , where p and q are integers and q β 0. 3.142678 = 3142678/1000000 , It is of the form π/π , where p = 3142678, q = 1000000 hence is a rational number.

Expressing decimal in p/q

Convert 2.333...Β to p/q form where p and q are integers and q β 0

Convert 0.123333Β .. to p/q form where p and q are integers and q β 0

Convert 0.575757..Β to p/q form where p and q are integers and q β 0

Convert 2.4(178)..Β to p/q form where p and q are integers and q β 0

Expressing numbers in p/q form

Example 6 You are here

Example 7 Important

Ex 1.3,3 Important

Ex 1.3,4

Example 8

Example 9 Important

Chapter 1 Class 9 Number Systems

Concept wise

- Rational numbers - Definition
- Finding rational number between two numbers
- Irrational Numbers
- Simplifying real numbers
- Rationalising
- Laws of exponents
- Finding decimal expansion
- Expressing decimal in p/q
- Classifiying rational/irrational
- Finding irrational numbers b/w two numbers
- Real numbers on a number line

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.