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For questions specific to the history of mathematics, the abstract study of topics encompassing quantity, structure, space, change, and other properties. General questions about mathematics are off-topic but might be asked on Mathematics Stack Exchange.

30 votes

How did the ancient Romans count with their fingers?

This page displays many Roman era testimonies that there was a system, and that it served to count at least up to the hundreds. I'll copy here the most important ones. Juvenal in his Satire X, 246 25 …
Vincenzo Oliva's user avatar