2. Decimal number system

1.Decimal number
The number system we use every day, based on 10 digits (0,1,2,3,4,5,6,7,8,9).

Position is important, with the first position being units, then next on the left being tens, then hundreds and so on

2.Decimal Point

A point or dot used to separate the whole number part from the fractional part of a number.

Example: in the number 36.9 the dot separates the 36 (the whole number part from the 9 (the fractional part, which really means 9/10)