What is the decimal form or Base-10 system?

The decimal form, also known as the Base-10 system, consists of ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. This system is widely used in mathematics and everyday counting because it is based on powers of ten. Each digit represents a value based on its position relative to the decimal point, with each position being a power of ten. Hence, the statement that it has only 10 possible numbers ranging from 0 to 9 accurately reflects the core characteristics of the decimal system.

While it's true that the decimal system can be extended to represent negative numbers and fractions, these attributes do not change the fundamental structure of the number system itself, which is defined primarily by the ten distinct digits it employs.