15.01 Units of time
Convert the following into 24-hour time:
11:33 am
11:26 pm
12:56 am
10:30 am
9:15 pm
8:40 am
7:25 pm
10:20 pm
Convert the following into 12-hour time:
20:59
23:10
10:44
07:12
18:45
02:00
14:24
00:30
Express the following times in 24-hour time:
Quarter to midnight.
Twenty past one in the afternoon.
Half past ten at night.
Quarter past eleven in the morning.
Ten past eight in the morning.
Ten to four in the afternoon.
A clock shows the time 19:39. Describe the time being shown in words.
Write the time shown on each of the following clocks in 24-hour time:
Convert the following to seconds:
10 minutes
3.5 minutes
16 hours
9.6 minutes
1\dfrac{1}{4} minutes
12\dfrac{3}{4} minutes
11 minutes
24 hours
Convert the following to minutes:
660 seconds
1320 seconds
360 seconds
600 seconds
5 hours
8.6 hours
11.5 hours
12 hours
Convert the following to hours:
360 minutes
600 minutes
780 minutes
594 minutes
36\,000 seconds
28\,800 seconds
11\,160 seconds
25\,920 seconds
Complete the following statements:
253 seconds is equal to ⬚ minutes and ⬚ seconds.
285 minutes is equal to ⬚ hours and ⬚ minutes.
4545 seconds is equal to ⬚ hour, ⬚ minutes, and ⬚ seconds.
Convert the following. Assume that there are 30 days in a month and 52 weeks in a year.
23 days to hours.
11 days to hours.
A non-leap year to hours.
2 weeks to days.
312 hours to days.
4 months to days.
5 fortnights to days.
70 days to weeks.
84 days to weeks.
3 years to weeks.
2 years to fortnights.
2 years to months.
Find the number of hours in 5 months. Assume that there are 30 days in a month.
A cake needs to cook for one and a half hours. How many minutes is this?
Han boils an egg for 360 seconds. How many minutes is this?
It takes around 300 minutes to drive from Sydney to Thredbo. How many hours is this?
The walk to the letterbox and back takes 1 minute and 48 seconds. How many seconds does the walk take in total?
Tamba ran a marathon in 2 hours and 42 minutes. How many minutes was this?
Nadia drove for 2 hours and 52 minutes. How many minutes was this?
An astronomer observes that a newly discovered planet rotates once every 67 hours, 25 minutes, 3 seconds. How often does the planet rotate in seconds?
Carl finished a marathon in 2 hours, 35 minutes and 19 seconds. How many seconds is that?
Dave just turned 9 years old. Assuming that there are 365 days in a year and ignoring leap years, find his age in:
Days
Hours
Minutes
Seconds
If an average person sleeps for 8 hours a night, how many weeks does an average person spend asleep in 65 years? Ignore leap years and round your answer to one decimal place.
If an average person showers for 6 minutes per day, how many hours do they spend in a shower in:
A non-leap year?
55 years (ignoring leap years)?