# Data Representation

### Resource Link

Ignou material for data representation

Data Representation

### Resource Link

##### Decimal number to binary number

- Short division by two
- Using chart (Descending Powers of Two and Subtraction)

##### Decimal to hexadecimal number

##### Converting Binary to Octal

##### Converting Binary to Hexadecimal

##### Hexadecimal to octal and octal to hexadecimal

##### Binary Addition

##### Binary subtraction

### Notes

###### Patterns in Binary

##### Converting Decimal to Binary

**Algorithm**

**Thinking Map**

Converting Decimal number 37 to binary

*Sources: http://conceptualmath.org/flesson/binary.html*

## Learning Objectives

- What are Decimal, Binary, Octal, and Hexadecimal Numbers?
- Competent in calculating
- binary number to decimal
- octal number to decimal
- hexadecimal number to decimal
- decimal number to binary number
- Division by Two
- Descending Powers of Two chart

- decimal to hexadecimal
- binary number to octal
- binary number to hexadecimal
- hexadecimal to octal
- octal to hexadecimal
- binary addition with quick check in decimal
- binary subtraction with quick check in decimal

*Please follow the material to meet the following objectives*

### 1.1 Test your Learning

*Using the binary number 101001001 convert it to*- decimal
- octal
- hexadecimal