A decimal point.
The number to the left of a decimal point is the integer part or the whole-number part. The part of a decimal to the right of the decimal point is the fractional part. The decimal point is called the decimal separator.
There should be no points after the decimal point.
There can be no number that has more than one decimal point.
It is called the digit in the first decimal place.
It is called a [decimal] fraction.
The second decimal place to the right of the decimal point is called the hundredths place
They are the decimal fractional part.
The decimal point.
It is a terminating decimal.
The 12th decimal place to the right of the decimal point is the trillionths place.