Number System Class 9 in One Shot 🔥 | Class 9 Maths Chapter 1 Complete Lecture | Amerjeet Sir

Number System Class 9 in One Shot 🔥 | Class 9 Maths Chapter 1 Complete Lecture | Amerjeet Sir NUMBER SYSTEMS in 1 Shot: FULL CHAPTER | Class 9th ✅ Number System Description (Short Notes) Number System is the collection of different types of numbers that we use in mathematics for counting, measuring, and calculations. It includes various number sets such as Natural numbers, Whole numbers, Integers, Rational numbers, Irrational numbers and together they form Real Numbers. 🔹 Natural Numbers (N): Counting numbers → 1, 2, 3, … 🔹 Whole Numbers (W): Natural numbers + Zero → 0, 1, 2, 3, … 🔹 Integers (Z): Positive, negative numbers & zero → … -3, -2, -1, 0, 1, 2, 3 … 🔹 Rational Numbers (Q): Numbers written in p/q form where q ≠ 0 → 1/2, -4/5 etc. 🔹 Irrational Numbers (Q’): Numbers that cannot be expressed in p/q → √2, π etc. 🔹 Real Numbers (R): Rational + Irrational numbers Number line is used to represent these numbers. Decimal expansion of rational numbers can be terminating or recurring (non-terminating repeating). Irrational numbers have non-terminating, non-repeating decimal expansion. Operations like addition, subtraction, multiplication and division can be applied to real numbers. 🔥 Hashtags / Searching Keywords (You can use them for posters, notes, reels, YouTube etc.) #NumberSystem #Class9Maths #RealNumbers #RationalNumbers #IrrationalNumbers #Integers #WholeNumbers #NaturalNumbers #DecimalExpansion #NumberLine #CBSEClass9 #MathematicsClass9 #MathsNotes #NCERTClass9 #MathsChapter1 #Class9Notes #Class9Ch1 #MathStudy #MathsShortNotes #CBSE2025 #StudyMaterial