Little to no mathematical advances were made by the Romans. Other than basic practical uses including trade and other business, the Romans rarely used math.
Emperor Domitianus, Aristotle, Aristarchus, Eratosthenes, Euclid, and Archimedes devised mathematical systems and ideas to help design and build the Colosseum, Constantine's Arch, the Pantheon, and Roman Bathhouses
The roman number system was base 10; however, it was deeply flawed because it did not have a number zero, which did not allow them to count any higher than a few thousand units.
The use of Roman Numerals began in approx. 900-800BCE. Popular symbols included "I, V, X, L, C, D, and M." Knowledge of these numbers were essential for efficient trade and communication.
The ancient Romans developed the Roman hand abacus, which was very similar to the Babylonian abacus. It was the first portable calculating device for merchants and tax collectors.