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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

  
   Yellow Box

2 two

    
   DarkCyan Box   DeepSkyBlue Box

3 three

      
   Orchid Box   Navy Box   Pink Box

4 four

   Thistle Box   DarkViolet Box   DarkTurquoise Box   MediumSeaGreen Box
        

5 five

          
   Olive Box   Brown Box   Chocolate Box   Goldenrod Box   MidnightBlue Box

6 six

            
   SteelBlue Box   Turquoise Box   DarkSlateBlue Box   OliveDrab Box   Fuchsia Box   Tan Box

7 seven

              
   MediumOrchid Box   SpringGreen Box   Chartreuse Box   DarkSeaGreen Box   YellowGreen Box   Lavender Box   GreenYellow Box

8 eight

                
   Blue Box   MediumTurquoise Box   Purple Box   RoyalBlue Box   BlueViolet Box   CornflowerBlue Box   DarkGreen Box   PowderBlue Box

9 nine

                  
   Wheat Box   SkyBlue Box   LimeGreen Box   DarkKhaki Box   SaddleBrown Box   MediumBlue Box   MediumSpringGreen Box   Green Box   DarkMagenta Box

Single-digit numbers are called units.

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