Learning Task No. 1 Fill in the table by converting from 12-hour clock to 24-hour clock and vice versa 12-hour 1.) 7:24 a.m. 2.) 3:35 a.m. 3.) 6:57 a.m. 4.) 11:00 a.m. 5.) 7:51 a.m. 24-hour 6.) 12:00 ? 7.) 22:45 ? 8.) 12:34 ? 9.) 23:50 H 10.) 23:05
The Correct Answer and Explanation is:
Here are the correct answers for the learning task, followed by a detailed explanation of the conversion process.
Completed Table
| 12-hour | 24-hour |
| 1.) 7:24 a.m. | 07:24 |
| 2.) 3:35 a.m. | 03:35 |
| 3.) 6:57 a.m. | 06:57 |
| 4.) 11:00 a.m. | 11:00 |
| 5.) 7:51 a.m. | 07:51 |
| 6.) 12:00 p.m. | 6.) 12:00 H |
| 7.) 10:45 p.m. | 7.) 22:45 H |
| 8.) 12:34 p.m. | 8.) 12:34 H |
| 9.) 11:50 p.m. | 9.) 23:50 H |
| 10.) 11:05 p.m. | 10.) 23:05 H |
Explanation
This task requires converting time between the 12-hour and 24-hour clock systems. Understanding the rules for conversion is essential for accurately telling time in different formats, which is a common practice in many fields, including transportation and military operations.
Converting from 12-hour to 24-hour clock:
The conversion process depends on whether the time is “a.m.” (ante meridiem, or before midday) or “p.m.” (post meridiem, or after midday).
- For a.m. hours: For times from 1:00 a.m. to 11:59 a.m., the hour number remains the same. You simply remove the “a.m.” designation. It is standard to use a leading zero for hours less than 10. For example, 7:24 a.m. becomes 07:24. The special case is the 12 a.m. hour; 12:00 a.m. (midnight) is represented as 00:00.
- For p.m. hours: For times from 1:00 p.m. to 11:59 p.m., you add 12 to the hour number. For instance, 2:00 p.m. becomes 14:00 (2 + 12). The exception is 12:00 p.m. (noon), which is written as 12:00 in 24-hour format.
Converting from 24-hour to 12-hour clock:
To convert from the 24-hour format back to the 12-hour format, the process is reversed.
- For hours 01:00 to 11:59: The hour number stays the same, and you simply add the “a.m.” designation.
- For hours 13:00 to 23:59: You subtract 12 from the hour number and add the “p.m.” designation. For example, in item 7, 22:45 H has an hour of 22. Subtracting 12 from 22 gives 10, so the time is 10:45 p.m. Similarly, for item 9, 23:50 H becomes 11:50 p.m. (23 minus 12).
- Special Cases: The hour 00 corresponds to 12 a.m. (midnight). The hour 12 corresponds to 12 p.m. (noon). This is why 12:00 H is 12:00 p.m., and 12:34 H is 12:34 p.m.
