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### Number System

Session overview
1. CLASS  IX Syllabus
2. Marks Assessment Pattern
3. Number System Introduction

Syllabus
1. Number System
2. Algebra
3. Coordinate Geometry
4. Geometry
5. Mensuration
6. Statistics and Probability

Marks: Board Exam - 80 Marks

Internal Assessment 20 Marks
Periodic Test         10 Marks
Note Book         05 Marks
Subject Enrichment 05 Marks

Number System
1. Review of numbers
2. Non-recurring/Non-terminating decimals
3. Rationalization
4. Laws of exponents
Review Of Numbers
1. Natural Numbers: N= {1,2,3,4,5……………………}
2. Whole Numbers: W={0,1,2,3,4,5,…………………}
3. Integers: Z= {……….-4,-3,-2,-1, 0, 1,2,3,4…….}
4. Rational  Numbers: Q= p/q form   q#0
5.   Ex: ½, ¾, 5/7 ,-12/19 , ……….
Examples:
1. Represent -4/3  on Number line:
2. Represent 5/3 on number line:
3. Find a rational number  between  -3 and 1
4. Find a rational number between  3/5 and 4/5
5. Write 10 rational numbers between 2/7 and 5/7
6. Find six rational numbers between-1 /3and 7/6