Video Transcript
Emma leaves her house to walk to
the library at 10:30. The walk takes her 15 minutes. What time does she arrive?
This question describes Emma who’s
walking from her house to the library. And the question asks us to find
out what time she gets there. What time does she arrive? Now, we’re given two pieces of
information to help us. We’re told the start time of Emma’s
walk. She leaves her house at 10:30 and
we’re also told the duration or how long it takes her. The walk takes her 15 minutes. Now, we can use the start time and
the duration to help us find the end time. We need to start at 10:30 and count
on 15 minutes.
We could use a number line to help
us. We know that there are 60 minutes
in an hour, so we can label our number line from zero to 60. This shows a whole hour. Now, Emma starts walking at half
past 10 or 10:30. So, we can mark the start time on
our number line, 30 minutes past 10. Now, let’s show the duration. We need to count on 15 minutes, and
we’re going to do this by skip counting in fives. Five, 10, 15. How many minutes past 10 is it
now? We’ve ended up halfway between the
numbers 40 and 50. This shows the number 45, doesn’t
it? It’s 45 minutes past 10.
To work out the end time or the
time that Emma arrives at the library, we’ve used the time that she starts her
journey and how long it takes. If we count on 15 minutes from
10:30, the end time will be 10:45.
