KEY IDEAS:
A day is divided in to two parts : the time before noon and the time after noon.
In 12 hour time the time starts at 12.00 midnight and goes to 12 noon then to 12 midnight, in 24 hour time the day stars at 00.00 midnight and goes to 12 noon then to 24.00 midnight eg 1pm 12 hr = 13.00 in 24hr.
Complete these units of time.
1 millennium = ________ years 1 century = ______________ years
1 decade = __________years 1 year = ____________12 months
1 year = ___________weeks 1 year = _______days or ______days in leap year
1 fortnight = ________ weeks 1 fortnight = _______days
1 day = _______ hours 1 hour (h) = ________minutes (min)
1 minute (min) = ______seconds (s)
On a 24-hour clock 1 a.m. is _ _ _ _ hours
12 midnight is _ _ _ _ hours
12 noon is _ _ _ _ hours
Convert these times to 24 hour time
a 10 past 3 a.m. __________________ b 5 past 12 a.m. ___________________
c. 5:38 p.m. __________________ d. 10.17 p.m ____________________
Convert :
e 3 hours to minutes _____________ f. 200 minutes to hours _________________
g. 2.5 years to days _______________ h 5.25 decades to years ________________
A plane lands at 2.15pm and requires 40 minutes to unload, reload and refuel. What time should the plan depart?
Annie arrives at the bus stop at 1.32pm. The next bus is at 2.05pm. How long does Annie have to wait?
I have made a model of a volcano. For best results I have to let the mold dry for 18 hours. How many days will it take? ___________________How many minutes will it take ? _______________
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