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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

  
   HotPink Box

2 two

    
   DarkKhaki Box   Magenta Box

3 three

      
   DarkOrchid Box   GreenYellow Box   Peru Box

4 four

   Blue Box   DarkSeaGreen Box   SandyBrown Box   DarkOrange Box
        

5 five

          
   LimeGreen Box   PowderBlue Box   DarkOliveGreen Box   SteelBlue Box   Olive Box

6 six

            
   MediumSeaGreen Box   Sienna Box   MediumSpringGreen Box   DeepPink Box   Maroon Box   Tan Box

7 seven

              
   ForestGreen Box   Purple Box   DodgerBlue Box   BurlyWood Box   Aqua Box   Cyan Box   Fuchsia Box

8 eight

                
   Brown Box   MediumVioletRed Box   MediumSlateBlue Box   Aquamarine Box   Plum Box   DarkCyan Box   OliveDrab Box   MediumBlue Box

9 nine

                  
   Orchid Box   CornflowerBlue Box   BlueViolet Box   MediumAquamarine Box   Empty Box   Navy Box   DarkBlue Box   DarkGoldenrod Box   Yellow Box

Single-digit numbers are called units.

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