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Decimals. A Decimal Number (based on the number 10) contains a Decimal Point.

First, let's have an example: Here is the number "forty-five and six-tenths" written as a decimal number: The decimal point goes between Ones and Tenths. 45.6 has 4 Tens, 5 Ones and 6 Tenths, like this: Now, let's discover how it all works ... Place Value. We write numbers using only ten symbols (called Digits).

Where we place them is important. The Ten Digits The Digits we use today are called "Hindu-Arabic Numerals" and look like these: Place Value Millionaire.