Total Concept

The Total is a Sum of its Parts. It is bigger than every Part within it. To find something bigger from smaller quantities, we have to Add.

First Part + Second Part = Total

Each Part is smaller than the Total. To find something smaller from a bigger quantity, we have to Subtract.

First Part = Total - Second Part
Second Part = Total - First Part

Application:

1) Geometry
- Angle Sum of Triangle
- Adjacent Angles on a Straight Line
- Angles about a Point
- Pythagoras' Theorem
2) Algebra
3) Arithmetic
4) Trigonometry

Etc

This concept is derived from the Small to Big Concept and the Big to Small Concept