Remember the original question:
Daniel starts school at and finishes at . How long does his school day last?
This is how to work it our using the 'counting on' method.
Start at and work out the number of minutes until 9 am.
Next work out how many hours there are between and .
Next calculate the number of minutes between and .
Finally add up the separate time intervals.
Amy used the internet from until . How long was she on it for?
Add up the time intervals
Of course is a silly answer.
is one hour.
The total time Amy spent on the internet was
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