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Whole Numbers and Cardinal Numbers: Introduction

In this unit Whole Numbers and Cardinal Numbers, we will look at numbers - whole numbers - from zero to one million: what these numbers are and how to write them.

When we write - in English or another language - a whole number that tells us how many of something that we have, the number is called a cardinal number. For example, 0 is a whole number and the word zero is a cardinal number.

Whole Numbers and Cardinal Numbers: 0 to 9

0 Zero

Zero is nothing. Other words for zero include nil, naught, and nought. There are also many slang words for zero - too many to list here.

1 one

  
   MediumBlue Box

2 two

    
   MediumSeaGreen Box   DeepPink Box

3 three

      
   Blue Box   Purple Box   DarkGreen Box

4 four

   MidnightBlue Box   Violet Box   SpringGreen Box   SandyBrown Box
        

5 five

          
   Magenta Box   HotPink Box   Indigo Box   DarkOrange Box   Empty Box

6 six

            
   Lavender Box   Chartreuse Box   CadetBlue Box   Olive Box   DarkCyan Box   DarkViolet Box

7 seven

              
   Maroon Box   Teal Box   DarkTurquoise Box   RoyalBlue Box   Chocolate Box   MediumVioletRed Box   MediumSlateBlue Box

8 eight

                
   DeepSkyBlue Box   LawnGreen Box   MediumTurquoise Box   MediumAquamarine Box   DarkSeaGreen Box   SkyBlue Box   Yellow Box   DarkMagenta Box

9 nine

                  
   MediumOrchid Box   Wheat Box   SteelBlue Box   YellowGreen Box   Navy Box   DarkKhaki Box   Aquamarine Box   Turquoise Box   CornflowerBlue Box

Single-digit numbers are called units.

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