16
Aug
Number systemClass 9 math tutorials, commutative law, commutative property, math, mathemafia, NCERT, properties of numbers
Concept: In this tutorial, you will learn about the commutative property (commutative law) and its applicability on different arithmetic operations. You will learn that addition and multiplication hold the commutative property where as subtraction and division does not.
Number System
- Number System – Best explained with real life examples
- Distributive property of multiplication over addition and subtraction
- Associative property of addition and multiplication
- Closure property
- Additive Identity, Multiplicative identity, Additive inverse, Reciprocal
- Commutative law explained for basic arithmetic operations
- Rational Numbers
- Integers
Polynomials
Important Concepts – Miscellaneous
Surface area and Volumes
- Area / Surface area / Volume – Introduction
- Surface Area of Cube and Cuboid
- Volume Of Cuboid and Cube
- Surface Area of Right Circular Cylinder
- Volume and capacity of Cylinder
- Right circular Cone
- Surface Area of Right circular Cone
- Volume of Cylinder vs Cone
- Litres and Cubic centimetre (cm³)
- Cubic meters to litres