This math topic focuses on calculating the negative elapsed time between two given times measured in hours and minutes, including half-hour increments. It involves a series of questions where learners are asked to determine how many hours and minutes earlier one specified time is compared to another. The problems encourage the development of skills in calculating time differences and understanding time as a continuum, enhancing both time management and mathematical thinking regarding the negative aspects of elapsed time.

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