How do you calculate the duration between 4:00 PM and 7:30 PM?

The duration between 4:00 PM and 7:30 PM is 3 hours and 30 minutes.

To calculate the duration between two times, you need to break it down into hours and minutes. Start by looking at the hours first. From 4:00 PM to 7:00 PM, there are 3 hours.

Next, consider the minutes. From 7:00 PM to 7:30 PM, there are 30 minutes.

Now, add the hours and minutes together. You have 3 hours from 4:00 PM to 7:00 PM and an additional 30 minutes from 7:00 PM to 7:30 PM. Therefore, the total duration is 3 hours and 30 minutes.

When calculating time durations, it can be helpful to use a timeline or a clock to visualise the intervals. This method ensures you account for both the hours and the minutes accurately. Remember, there are 60 minutes in an hour, so if your minutes add up to 60 or more, you need to convert them into hours. For example, 90 minutes would be 1 hour and 30 minutes.

Practising with different time intervals can help you become more comfortable with these calculations. Try breaking down the problem step-by-step, and soon it will become second nature!