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The zero and the counting numbers (1,2,3,...) make up the set of whole numbers. But not every number is a whole number. Our decimal system lets us write numbers of all types and sizes, using a clever symbol called the decimal point.

As you move right from the decimal point, each place value is divided by 10.

Move your mouse cursor over the decimal number below to see its parts.

 

 

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First Glance In Depth Examples Workout
First Glance   In Depth   Examples   Workout

Decimal numbers