This math topic focuses on computing the difference in time between two clocks, expressed through hours and minutes. It is designed to develop skills in calculating elapsed time, with an emphasis on solving problems where the second clock is earlier than the first, which might be considered as dealing with "negative" time differences. The problems require learners to find out how much earlier one time is compared to another by examining visual representations of analog clocks.

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