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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

  
   Sienna Box

2 two

    
   Chocolate Box   DarkKhaki Box

3 three

      
   Maroon Box   SlateBlue Box   Tan Box

4 four

   Goldenrod Box   Indigo Box   LawnGreen Box   Orchid Box
        

5 five

          
   DarkOrchid Box   Chartreuse Box   Turquoise Box   MediumSeaGreen Box   DarkGoldenrod Box

6 six

            
   RosyBrown Box   Navy Box   Peru Box   DarkMagenta Box   MediumSpringGreen Box   DeepPink Box

7 seven

              
   BurlyWood Box   Blue Box   SaddleBrown Box   DarkOrange Box   Fuchsia Box   DodgerBlue Box   PowderBlue Box

8 eight

                
   Green Box   SeaGreen Box   MediumBlue Box   DarkBlue Box   SpringGreen Box   Plum Box   Pink Box   DarkSeaGreen Box

9 nine

                  
   YellowGreen Box   MediumVioletRed Box   Yellow Box   Gold Box   OliveDrab Box   Cyan Box   MidnightBlue Box   SteelBlue Box   DarkOliveGreen Box

Single-digit numbers are called units.

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