Saltar al reproductorSaltar al contenido principal
Daniel Zans
  • hace 1 año
Cálculo Horario

Categoría

📚
Aprendizaje
Transcripción
00:00Today we finished doing the evaluation of time use.
00:05We had two activities left.
00:07Activity 1 was if I have to go to the doctor's office at 6.15 and it's 9.36.25,
00:23how much time do I need to rest?
00:26The first thing we have to do is to solve this question.
00:32We have to do a subtraction.
00:35What we have to subtract is the time to go to the doctor's office
00:40and the other time would be the current time.
00:46So it's the time to go to the doctor's office minus the current time.
00:53So we put the 16, 15 and 0 hours and below we put the 9, 37 and 25 hours.
01:05The first problem I have is not to subtract 25.
01:11You can't, so we ask next to it.
01:16I ask for a minute and it's 60 seconds.
01:1960 seconds minus 25 gives us 35.
01:23So we go to the next to it, 14.
01:27I can't subtract 37, so I do the same thing again.
01:34I ask the next to it, 16, it's 15.
01:41It gives us a minute and 60 seconds.
01:44And we subtract 14 minus 7, it's 7.
01:47And since we have the 1, it gives us 37.
01:52And 15 minus 9 is 6.
01:54So what's left is 6 hours, 37 minutes and 35 seconds.
02:04The second problem is if I travel in the bus that leaves at 9.15, I arrive at 11.25.
02:13But if I travel in the bus that leaves at 10.20, I arrive at 11.45.
02:22How long is the shortest way?
02:25So the sequence we have to do to solve this problem, we focus on the question.
02:33How long is the shortest way?
02:36What we have to do to know which is the shortest way, we have to compare.
02:42To compare, we have to know the times to know which is the shortest.
02:47But for that, we have to compare the two times.
02:52That a comparison can be given that they are equal or that one is greater than the other.
03:02And then we compare.
03:04But how do we determine how long each of those trips lasts?
03:11A subtraction.
03:12We have to subtract 11.25 hours minus 9.15 hours.
03:17And in the other subtraction is 10.25 hours minus 11.45 hours.
03:24Then we subtract 45 minus 20 gives us 25.
03:29And we continue subtracting.
03:3225 minus 15 gives 10.
03:3511 minus 9 gives 2.
03:38So the biggest is 9.15 hours.
03:48So the answer is 1.20 hours.
Sé la primera persona en añadir un comentario
Añade tu comentario