The Babylonian Number System uses the symbol to denote units of one and the symbol to denote tens. Each number is made up of the number of tens in it along with the number of ones in it, as shown in the chart above. So, the number 45 is written as 4s alongside 5s.They invented a number system about 5,000 years ago. It is one of the oldest number systems in the world. The first mathematics can be traced to the ancient country of Babylon, during the third millennium BC.In calculating, the Babylonian Number System has certain advantages, like the fact that that 1/2, 1/3, 1/5 can all be represented without recourse to repeating digits. As mentioned before, this system also allowed for the representation of numbers of virtually any size by reusing the same set of symbols, making it easier to carry out arithmetic operations on large numbers. However, the system also has its disadvantages, such as the lack of the number zero.