This math topic focuses on calculating the negative elapsed time between two clock times, reported to the nearest quarter hour. Students are asked to determine how many minutes earlier a second clock shows compared to a first clock, enhancing their skills in reading analog clocks and performing time calculations. The problems require subtracting times and understanding time in a practical context, which could be challenging and engaging for learners grasping the concept of time differences. Each question is presented with multiple-choice answers.

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