This math topic focuses on understanding elapsed time, particularly through subtraction of full hours from given times in a clock format. The exercises involve subtracting 60 minutes from different starting times spanning throughout the day, such as 4:00, 3:00, 9:00, among others. The goal is for learners to calculate the resulting time after the subtraction and familiarize themselves with how time changes backwards by an hour. This subject is designed to strengthen the ability to manage and comprehend negative elapsed time variations, essential for day-to-day time management skills.

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