This math topic focuses on calculating negative elapsed time in the context of a clock. It centers on how the time changes over half-hour intervals, both forwards and backwards. Each question presents a clock showing a specific time and asks to determine the time after a specified change. Students are required to understand and compute how much time has passed, or will pass, and select the correct answer from multiple options, enhancing their skills in negative elapsed time calculations.

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