This math topic focuses on calculating elapsed time, specifically scenarios that could involve subtracting time (negative changes) and reading time changes that occur in quarter-hour increments. Each question presents a scenario where learners must determine the resulting time after a particular duration has passed or been subtracted. Multiple-choice answers accompany each problem, allowing learners to select the correct adjusted time. The overall aim is to enhance skills in manipulating and understanding time as a measurable quantity in everyday life contexts.

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