Our modern decimal system, originated in India and spread through Arab mathematicians. It is the numerals that is widely used today. Learn about features and various attributes of this number system. As you study other number systems, try to relate the information to the one presented here.

The simplest counting system using marks to represent quantities. Learn about its simplicity, advantages, but also some of its flaws.This numeration is used a lot in statistics.

Ancient Egyptian hieroglyphic number system using distinct symbols for powers of ten. See how symbols such as fish, heelbone, lotus flower,... to represent numbers. It is easy to understand, but calculation can become quickly cumbersome.

The classic Roman numeral system still used for special occasions today. Many of us have become familiar to this numerals system through the manipulation of books since many books use roman numerals as page numbers. However, explore it a little bit deeper here!

Ancient Mesopotamian base-60 system that influenced time and angle measurements. It uses only two symbols to represent all possible numbers. However, it is probably one of the most ambiguous of all numerals.

Complex vigesimal (base-20) system developed by the Maya civilization. Try to study this number system last.It uses three basic symbols yet it is probably one of the most sophisticated and most complicated of all numerals.

Understanding numbers in base-5 and their properties. Also included is a good explanation of the familiarity and differences between base 5 and base 10.

How to add numbers in the base-5 system.

Methods for subtracting in base-5 notation.

Techniques for multiplying numbers in base-5.

Understanding the fundamental base-2 number system used in computers with a solid and thorough introduction of the binary or base two number system. Get ready to sweat and master the binary number system once and for all.

How to add numbers in binary notation.

Methods for subtracting binary numbers.

Techniques for multiplying binary numbers.