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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

    
   MidnightBlue Box   DeepPink Box

3 three

      
   OliveDrab Box   CadetBlue Box   SlateBlue Box

4 four

   YellowGreen Box   MediumAquamarine Box   LimeGreen Box   RosyBrown Box
        

5 five

          
   BlueViolet Box   SeaGreen Box   SpringGreen Box   DarkSlateBlue Box   MediumVioletRed Box

6 six

            
   Cyan Box   Aqua Box   MediumSlateBlue Box   Brown Box   DarkTurquoise Box   Empty Box

7 seven

              
   MediumSpringGreen Box   Olive Box   DarkGreen Box   Turquoise Box   Peru Box   DarkViolet Box   DarkMagenta Box

8 eight

                
   MediumOrchid Box   SkyBlue Box   ForestGreen Box   SteelBlue Box   Violet Box   Thistle Box   Teal Box   DodgerBlue Box

9 nine

                  
   Aquamarine Box   Maroon Box   DarkGoldenrod Box   DarkOrchid Box   Blue Box   MediumPurple Box   SandyBrown Box   Tan Box   MediumBlue Box

Single-digit numbers are called units.

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