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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

  
   SandyBrown Box

2 two

    
   DarkViolet Box   Brown Box

3 three

      
   Aqua Box   CornflowerBlue Box   Turquoise Box

4 four

   MediumAquamarine Box   RoyalBlue Box   Teal Box   MediumVioletRed Box
        

5 five

          
   Green Box   Wheat Box   Chartreuse Box   Khaki Box   OliveDrab Box

6 six

            
   Thistle Box   DarkKhaki Box   MediumBlue Box   SpringGreen Box   Indigo Box   SaddleBrown Box

7 seven

              
   Magenta Box   Coral Box   SeaGreen Box   BurlyWood Box   DarkMagenta Box   Lavender Box   SteelBlue Box

8 eight

                
   DarkTurquoise Box   Chocolate Box   Blue Box   RosyBrown Box   MediumSeaGreen Box   DarkSeaGreen Box   Gold Box   Aquamarine Box

9 nine

                  
   MediumSpringGreen Box   Plum Box   Navy Box   PowderBlue Box   MidnightBlue Box   Cyan Box   MediumTurquoise Box   Violet Box   Olive Box

Single-digit numbers are called units.

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