This was a decimal

The positions of these symbols indicate different powers of ten,starting on the right and increasing as we move left.For example, the number 316 reads as 6x10^0 plus 1x10^1 plus 3x10^2.A key breakthrough of this system,which was also independently developed by the Mayans,was the number zero.Older positional notation systems that lacked this symbol would leave a blank in its place,making it hard to distinguish between 63 and 603,or 12 and 120.