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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

  
   BlueViolet Box

2nd second

    
   MediumBlue Box   DeepPink Box

3rd third

      
   SlateBlue Box   DarkGreen Box   Magenta Box

4th fourth

   Lavender Box   CornflowerBlue Box   DarkGoldenrod Box   DodgerBlue Box
        

5th fifth

          
   MediumAquamarine Box   Chocolate Box   Gold Box   Orchid Box   MediumSpringGreen Box

6th sixth

            
   MidnightBlue Box   MediumVioletRed Box   Aquamarine Box   DarkTurquoise Box   Empty Box   DarkBlue Box

7th seventh

              
   DarkSeaGreen Box   GreenYellow Box   Indigo Box   DeepSkyBlue Box   SteelBlue Box   DarkKhaki Box   Turquoise Box

8th eighth

                
   DarkOrange Box   DarkCyan Box   SeaGreen Box   DarkOrchid Box   BurlyWood Box   Plum Box   Brown Box   OliveDrab Box

9th ninth

                  
   Cyan Box   Green Box   MediumSeaGreen Box   MediumOrchid Box   Tan Box   Blue Box   MediumPurple Box   Goldenrod Box   Sienna Box

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