This math topic focuses on estimating elapsed time with positive and negative adjustments. Specifically, it covers the conversion and calculation of time in half-hour increments and involves determining the final time after a specified interval has been added to or subtracted from a given starting time. The problems are likely presented in multiple-choice format and practice subtracting or adding times, emphasizing the ability to calculate and understand shifts in time accurately.

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