- Concept of a Base of Number System
- Problem-Introduction to Decimal System and Base
- Binary Number System
- Problem-Binary Number System
- Base Five Number System
- problem-Base Five Number System and conversion from base 10 to base 5
- Base Eight Number System

- Conversion of Number from Base 5 to 10 System
- Conversion of Number from Base 10 to 8 System and Vise Versa
- Problem-Conversion of Number from Base 10 to 8 System
- Conversion of Number from Base 2 to 10 System
- Problem-Conversion of Number from Base 2 to 10 System
- Addition of Numbers in Binary System
- Problem-Addition of Numbers in Binary System
- Subtraction of Numbers in Binary System
- Problem-Subtraction of Numbers in Binary System
- Multiplication of Numbers in Binary System
- Problem-Multiplication of Numbers in Binary System
- Addition of Numbers in Base Five System
- Subtraction of Numbers in Base Five System
- Multiplication in Base-5 System
- Problem-Multiplication in Base-5 System
- Addition of Numbers in Base Eight System
- Subtraction of Numbers in Base Eight System
- Problem-Subtraction of Numbers in Base Eight System
- Multiplication of Numbers in Base Eight System
- Problem-Multiplication of Numbers in Base Eight System
- Addition of Numbers in Different Base System
- Problem-Addition of Numbers in Different Base System
- Subtraction of Numbers in Different Base System
- Problem-Subtraction of Numbers in Different Base System
- Multiplication of Numbers in Different Base System
- Problem-Multiplication of Numbers in Different Base System
- BODMAS Rule in Solving Numbers with Different Base System