Rigel 
Base 10, also known as the decimal system, is the standard number system using ten digits (0–9) and place value to represent all numbers.
Definition and Structure
The base 10 number system uses ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9, with each digit’s value determined by its position in the number
+1
. Each place represents a power of 10, increasing from right to left for whole numbers: ones (10⁰), tens (10¹), hundreds (10²), thousands (10³), and so on
+1
. For example, the number 2,145 in base 10 can be expressed in expanded form as:
2,145 = (2 × 10³) + (1 × 10²) + (4 × 10¹) + (5 × 10⁰) = 2000 + 100 + 40 + 5
Reference: mathmonks.com
About The Author
Aurora 
Doyen Altair 