This math topic involves practicing the calculation of elapsed time involving subtraction, specifically in increments of half-hours to 90 minutes. The students are expected to determine what the clock will display after subtracting specified minutes from a given starting time. The subtraction includes time intervals of 30, 60, and 90 minutes. Each problem entails calculating the time based on the decrease in minutes, and selecting the correct answer from multiple choices, shown with clock image representations.

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