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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

  
   Violet Box

2 two

    
   Peru Box   Cyan Box

3 three

      
   Fuchsia Box   Magenta Box   Lavender Box

4 four

   SlateBlue Box   DarkSlateBlue Box   MediumBlue Box   Khaki Box
        

5 five

          
   Maroon Box   Blue Box   Plum Box   Aquamarine Box   SeaGreen Box

6 six

            
   Gold Box   BlueViolet Box   GreenYellow Box   DarkTurquoise Box   Teal Box   Coral Box

7 seven

              
   DeepSkyBlue Box   Tan Box   Chocolate Box   RosyBrown Box   ForestGreen Box   Olive Box   Green Box

8 eight

                
   CadetBlue Box   Aqua Box   YellowGreen Box   OliveDrab Box   SkyBlue Box   SpringGreen Box   SteelBlue Box   DarkGoldenrod Box

9 nine

                  
   Orchid Box   Brown Box   Goldenrod Box   DarkOliveGreen Box   MediumSeaGreen Box   SaddleBrown Box   Yellow Box   Chartreuse Box   MediumTurquoise Box

Single-digit numbers are called units.

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