# Introduction to Numbers

### Types of Numbers

### Video

This video from *Firefly Lectures* gives an introduction to number sets.

Note: All *Firefly Lectures* content is available for free at www.fireflylectures.com.

This next video from *Firefly Lectures* teaches us about some of the most important sets of numbers.

Note: All *Firefly Lectures* content is available for free at www.fireflylectures.com.

### Notes

These notes from the maths support centre SUMS at NUI Galway introduce different types of numbers (natural numbers, integers, rational, irrational and real numbers) and their notations.

A pdf of this document can be downloaded here.