Home Site Map

Whole Numbers and Ordinal Numbers: Introduction

In the unit Whole Numbers and Cardinal Numbers, we learned about numbers - whole numbers - from zero to one million: what these numbers are and how to write them. We learned that we write a whole number that tells us how many of something that we have, the number is called a cardinal number.

In this unit Whole Numbers and Ordinal Numbers, we learn how to write numbers when they are used to describe an order, such as rank or position. An example is to say that something is third from the right. Numbers when written that describe an order are called ordinal numbers.

Whole Numbers and Ordinal Numbers: 0 to 9

0th zeroth

As we saw in the unit Whole Numbers and Cardinal Numbers, zero is nothing.

1st first

2nd second

3rd third

4th fourth

5th fifth

6th sixth

7th seventh

8th eighth

9th ninth

Continue to Next Page