Because it is a point that is used in the decimal system of counting. Decimal means based on ten.
There should be no points after the decimal point.
It is called a [decimal] fraction.
They are the decimal fractional part.
The decimal point.
The dot between the ones and the tenths is called the 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.
A 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.
Decimal
The 12th decimal place to the right of the decimal point is the trillionths place.