Elapsed Time for Kids: How Long Did It Last? (Grade 3 Math)

Hi, I'm Luna from DoodleBeez. Today we are finding elapsed time. Elapsed time is how much time passes from when something starts to when it ends, like how long a movie lasts.

Soccer practice starts at three o'clock and ends at half past four. How long is it? Count the whole hours first. Three o'clock to four o'clock is one hour.

Then count the minutes. Four o'clock to four thirty is thirty more minutes. One hour plus thirty minutes. So soccer practice lasts one hour and thirty minutes.

Harder times need a timeline. A show starts at nine twenty and ends at eleven oh five. Jump one hour to ten twenty. Then jump forty minutes to eleven o'clock. Then five more minutes to eleven oh five.

Now add up the jumps. One hour, plus forty minutes, plus five minutes. Forty plus five is forty five. So the show lasts one hour and forty five minutes.

Now it's your turn. A party starts at one forty five and ends at three ten. How long is it? Pause and try. One hour to two forty five, fifteen minutes to three, then ten more. One hour twenty five minutes.

Great job! Remember, elapsed time is the time between the start and the end. Jump the whole hours first, then jump to the next o'clock, then add the minutes. Practice elapsed time in the Math Lab at doodlebeez.com. See you next time!