This math topic focuses on calculating elapsed time, specifically dealing with differences between two given times and expressing these differences in hours and minutes. The problems involve determining how many hours and minutes earlier one clock shows compared to another. It explores negative elapsed time, which may imply looking backward to find how much earlier a time was, rather than forward. This set of problems is categorized under an advanced level of elapsed time and negative time calculations.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.