Save Big on Coursera Plus. 7,000+ courses at $160 off. Limited Time Only! Grab it Learn mental math techniques in this 12-minute educational video that demonstrates how to solve a practical time-based fraction problem. Practice calculating what time it would be when 3/8ths of a day has elapsed using mental math strategies, without relying on calculators or written work. Master fundamental mathematical concepts while developing quick mental calculation skills that can be applied to various real-world scenarios.