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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

  
   Cyan Box

2 two

    
   YellowGreen Box   RoyalBlue Box

3 three

      
   Green Box   Yellow Box   Fuchsia Box

4 four

   BlueViolet Box   BurlyWood Box   DarkKhaki Box   DarkCyan Box
        

5 five

          
   Pink Box   MediumVioletRed Box   Turquoise Box   Gold Box   DarkOrchid Box

6 six

            
   Lavender Box   DeepPink Box   PowderBlue Box   DarkBlue Box   Indigo Box   ForestGreen Box

7 seven

              
   Sienna Box   Chartreuse Box   MediumTurquoise Box   SkyBlue Box   MediumSeaGreen Box   MediumBlue Box   DodgerBlue Box

8 eight

                
   Purple Box   DarkGreen Box   Empty Box   DarkSeaGreen Box   Brown Box   MediumAquamarine Box   DarkMagenta Box   Wheat Box

9 nine

                  
   DarkSlateBlue Box   Violet Box   Coral Box   Aquamarine Box   SpringGreen Box   DarkTurquoise Box   Aqua Box   CadetBlue Box   Navy Box

Single-digit numbers are called units.

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