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Project

Prepare a time-table of your daily activities on a chart paper in 24-hour
clock time.

converting 12-hour clock into 24-hour clock

12-hour clock Method to convert examples

Subtract 12 hours and write 12:05 a.m. 00:05 hours
12 midnight to 12:59 am
the time without a.m. 12:55 a.m. 00:55 hours

2:45 a.m. 02:45 hours
Write the same time without
1:00 a.m. to 12:59 pm 11:38 a.m. 11:38 hours
a.m. or p.m.
12:28 p.m. 12:28 hours

1:40 p.m. 13:40 hours
Add 12 hours and write the
1:00 p.m. to 11:59 pm 4:23 p.m. 16:23 hours
time without p.m.
10:15 p.m. 22:15 hours

converting 24-hour clock into 12-hour clock

24-hour clock Method to convert examples

00:00 hours to 00:59 Add 12 hours and write the 00:44 hours 12:44 a.m.
hours time using a.m. 00:55 hours 12:55 a.m.

01:15 hours 1:15 a.m.
01:00 hours to 11:59 Write the same time using
hours a.m. 08:50 hours 8:50 a.m.
10:25 hours 10:25 a.m.
12:00 hours to 12:59 Write the same time using 12:12 hours 12:12 p.m.
hours p.m. 12:48 hours 12:48 pm

13:28 hours 1:28 p.m.
13:00 hours to 23:59 Subtract 12 hours and write
hours the time using p.m. 16:49 hours 4:49 p.m.
22:17 hours 10:17 pm

Practice time 10e

1. Convert the following into the 24-hour format.

(a) 3:34 a.m. ________ (b) 4:50 p.m. ________ (c) 7:30 p.m. ________

(d) 10:00 a.m. ________ (e) 12 midnight ________ (f) 6:34 p.m. ________

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