David W. answered • 09/01/15
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The decimal number system is a positional number system.
The decimal point goes to the right of the unit's (one's) position and to the left of the tenths position (where the digit 9 appears). That means that the value of the 9 is 9 tenths, or 9/10.
Note: position names (going left) are units, tens, hundreds, thousands, ... and (going right) tenths, hundredths, thousandths, etc.
