Math from Zero #02: The History of Numbers (EngTech)

Practice workbook for the EngTech video "Why Clocks Use IIII, Not IV: The History of Numbers" (YouTube @engtechacademy). 17 exercises with fully worked, carefully reviewed solutions: how Egypt, Babylon, Rome, China and other cultures wrote numbers, why base 60 still runs our clocks, Roman numerals and their rules, and engineering cases (rotary tables, robot angles). Short recap boxes, then warm-up, practice and an engineering challenge. Watch the episode, then work the exercises. PDF in English, Portuguese and Spanish (A4 and Letter).