# 5.11 - Elapsed Time

The student will

• solve practical problems related to elapsed time in hours and minutes within a 24-hour period.

### BIG IDEAS

• So that I can determine how much time I have left to complete a task
• So that I can find the amount of time I have to wait until an event begins or ends
• So that I know how much time I have spent on…
• So that I can figure out how much I can get done within a given time (i.e how many rides do I have enough time to get on at the amusement park)
• So that I can plan my day

### UNDERSTANDING THE STANDARD

• Elapsed time is the amount of time that has passed between two given times.
• Elapsed time can be found by counting on from the beginning time or counting back from the ending time.

### ESSENTIALS

The student will use problem solving, mathematical communication, mathematical reasoning, connections, and representations to

• Solve practical problems related to elapsed time in hours and minutes within a 24-hour period:
• when given the beginning time and the ending time, determine the time that has elapsed;
• when given the beginning time and amount of elapsed time in hours and minutes, determine the ending time; or
• when given the ending time and the elapsed time in hours and minutes, determine the beginning time.

### KEY VOCABULARY

Updated: May 29, 2019