This math topic focuses on calculating elapsed time in hours and minutes, specifically when determining how much earlier one time is compared to another. The questions involve comparing two times and requiring the determination of the time difference in a negative context (i.e., how much earlier). Each question lists possible answers to choose from, emphasizing on practicing the subtraction of times, sometimes involving quarter hours, enhancing skills in time calculation and understanding of clock reading in practical scenarios.

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