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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

  
   DarkTurquoise Box

2 two

    
   DarkMagenta Box   DarkSlateBlue Box

3 three

      
   YellowGreen Box   Aquamarine Box   Green Box

4 four

   Olive Box   Thistle Box   BurlyWood Box   LimeGreen Box
        

5 five

          
   Khaki Box   CornflowerBlue Box   DarkViolet Box   MediumAquamarine Box   Blue Box

6 six

            
   Magenta Box   MediumVioletRed Box   Maroon Box   HotPink Box   Yellow Box   RoyalBlue Box

7 seven

              
   Wheat Box   DeepSkyBlue Box   MediumPurple Box   GreenYellow Box   DarkGreen Box   Orchid Box   Fuchsia Box

8 eight

                
   SkyBlue Box   LawnGreen Box   Gold Box   Coral Box   Turquoise Box   DarkGoldenrod Box   MediumOrchid Box   SaddleBrown Box

9 nine

                  
   MediumBlue Box   Plum Box   Indigo Box   Pink Box   DarkSeaGreen Box   Chartreuse Box   Sienna Box   Empty Box   SeaGreen Box

Single-digit numbers are called units.

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