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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

  
   DodgerBlue Box

2 two

    
   GreenYellow Box   DeepPink Box

3 three

      
   LimeGreen Box   CadetBlue Box   SteelBlue Box

4 four

   MidnightBlue Box   Brown Box   Purple Box   SlateBlue Box
        

5 five

          
   SaddleBrown Box   DarkOrchid Box   MediumVioletRed Box   Sienna Box   MediumAquamarine Box

6 six

            
   BlueViolet Box   MediumSeaGreen Box   CornflowerBlue Box   Blue Box   Khaki Box   Navy Box

7 seven

              
   RosyBrown Box   DarkSlateBlue Box   Fuchsia Box   DarkGoldenrod Box   Teal Box   DarkGreen Box   Turquoise Box

8 eight

                
   MediumSlateBlue Box   YellowGreen Box   SpringGreen Box   Aquamarine Box   DarkKhaki Box   Violet Box   Tan Box   Indigo Box

9 nine

                  
   Lavender Box   Gold Box   Green Box   BurlyWood Box   Pink Box   DarkViolet Box   MediumTurquoise Box   Goldenrod Box   DarkSeaGreen Box

Single-digit numbers are called units.

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