# CS Fundamentals - Decimal & Binary Practice

## Binary to Decimal

Convert the following to Decimal numbers.

- 111<sub>2</sub>
- 1100<sub>2</sub>
- 1110<sub>2</sub>
- 1001<sub>2</sub>
- 10011<sub>2</sub>

## Decimal to Binary

Converto the following to Binary numbers.

- 5<sub>10</sub>
- 7<sub>10</sub>
- 12<sub>10</sub>
- 16<sub>10</sub>
- 17<sub>10</sub>

## Hexadecimal

- Why do Computer Scientists find Hexadecimal numbers useful? 
- Using the [chart](https://github.com/Ada-Developers-Academy/textbook-curriculum/blob/master/04-cs-fundamentals/classroom/Binary.md) from the textbook curriculum, answer the following:
  - What is 15 in Hex?
  - What is 15 in Binary?
  - What is A2<sub>16</sub> in binary?

When you finish check your answers with an neighbor.

