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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

   PowderBlue Box

2 two

   Purple Box   MediumSeaGreen Box

3 three

   DarkOliveGreen Box   Maroon Box   Teal Box

4 four

   Khaki Box   Cyan Box   DodgerBlue Box   DarkBlue Box

5 five

   DeepPink Box   Peru Box   DarkGreen Box   DarkCyan Box   OliveDrab Box

6 six

   RoyalBlue Box   LawnGreen Box   Magenta Box   DarkSlateBlue Box   Aquamarine Box   SteelBlue Box

7 seven

   Gold Box   Lavender Box   DarkMagenta Box   Thistle Box   Blue Box   Tan Box   DarkOrchid Box

8 eight

   SeaGreen Box   Empty Box   MediumSpringGreen Box   Turquoise Box   Chocolate Box   Brown Box   MidnightBlue Box   CadetBlue Box

9 nine

   SlateBlue Box   Sienna Box   GreenYellow Box   DarkGoldenrod Box   MediumBlue Box   SandyBrown Box   MediumSlateBlue Box   DeepSkyBlue Box   MediumTurquoise Box

Single-digit numbers are called units.

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