Seems unlikely. Greeks and Romans probably did calculations in pretty much the same way, using a counting board. The early Greek way of writing numbers (look up

Seems unlikely. Greeks and Romans probably did calculations in pretty much the same way, using a counting board. The early Greek way of writing numbers (look up Attic numerals) was the direct ancestor of the Roman method. The alternative later way the Greeks (e.g. Euclid, Archimedes) wrote numbers was using their alphabet for 1–9, using separate letters for 10–90 and 100–900, then writing 1000–9000 with a “thousand” symbol plus the letter for 1–9 on top. Overall also a big pain in the butt.