LO: Choose and use number
operations to solve time
problems
Class Example:
If I got up at 7:15 and left the house
at 8:05, how long did it take me to
get washed and dressed to have
breakfast?
Using an empty number line...
+45
+5
7.15
8.00
7:15 to 8:00 = 45 minutes
8:00 to 8:05 = 5 minutes
So, 7:15 to 8:05 = 50 minutes!!
8.05
Now solve this problem in
pairs:
If I got home at 17:30 and
went to bed at 21:30, how long
was I at home before I went
to bed?
What answer did you get?
How did you work it out?
Another yummy problem!
I had my dinner at 18:05
but I started cooking it 45
minutes before I ate it.
What time did I start
cooking?
What answer did you get?
How did you work it out?
Last one…!
It normally takes me 35 minutes
to drive to school, but yesterday it
took me three times as long
because of the tortoise holding up
traffic on the road! How long did
it take me to drive to school
yesterday?
What answer did you get? How
did you work it out?
Your task:
1. Make up and record 3 problems of
your own, involving time.
2. Show clear workings and write
down the answer clearly.
3. When you have done this, read
them out to your partner to solve!