Elapsed time

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Elapsed time

Your Teacher Bestie- Elementary Math · ⏱ 2:14 · 29 مشاهدة · 1 jaar geleden

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Let's learn how to find lapse time using the mountain hill and rock strategy. So lapse time is how much time has passed from the start time to the end time. So from the start time, which is 5:45 p.m. to 7:28 p.m. So I'm going to go ahead and start with the mountain, which is equivalent to 1 hour. So know that 5:45 1 hour later would be 6:45. Can draw another mountain? If do, get 7:45, which passes my end time. So, I'm not going to keep using the mountain. I'm gonna go ahead and start using the hill. So, I'm just going to label this. This was plus one hour. All right. And now we're moving on to using the hill. So, the hill can be used for 5 minutes or for 10 minutes. In this case, I'm going to use 10 minutes because we can count we can skip count by 10 quicker to get to 728. So we have 645 and + 10 will be 655 plus another 7005 plus another 10 715 plus another 725 I'm drawing them little bit smaller because I'm running out of space but 7:25 So this is still 10 minutes 10 minutes. Can do another 10, another hill? No, because if do another one, I'll get 7:35, which passes my end time. So, it's time to switch to the rock. So, the rock is used just for one minute. So, we have 7:25. Now, we're going to count by one. 728. So, this was just all plus one. Now we add all the time together to see what the total elapse time was. So we have 1 hour and then we have 10 20 30 40 41 42 43. So 1 hour and 43 minutes is the elapse time. 1 hour and 43 minutes. Easy peasy.