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Educational worksheet for converting 12-hour to 24-hour time format.

Worksheet titled "Converting 12 to 24 Hour Time" with exercises for converting time, including analog clocks and time conversion problems.

Worksheet titled "Converting 12 to 24 Hour Time" with exercises for converting time, including analog clocks and time conversion problems.

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Show Answer Key & Explanations Step-by-step solution for: Telling Time in 24 Hour Format Worksheet | Teach Starter
Let’s work through each part of the worksheet step by step.

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Part 1: Fill in the missing P.M. hours around the clock.

This is about converting 24-hour time to 12-hour P.M. time for hours from 13 to 23 (since 12 P.M. is noon, and after that it’s 13:00 = 1 P.M., etc.).

We go clockwise starting just after 12:

- After 12 → 1 P.M. → corresponds to 13:00
- Then 2 P.M. → 14:00
- 3 P.M. → 15:00
- 4 P.M. → 16:00
- 5 P.M. → 17:00
- 6 P.M. → 18:00
- 7 P.M. → 19:00
- 8 P.M. → 20:00
- 9 P.M. → 21:00
- 10 P.M. → 22:00
- 11 P.M. → 23:00

So filling the boxes clockwise around the clock (starting at top right):

Top box (after 12): 1 P.M.
Then going clockwise:
2 P.M.
3 P.M.
4 P.M.
5 P.M.
6 P.M.
7 P.M.
8 P.M.
9 P.M.
10 P.M.
11 P.M.

(Note: The left side has boxes too — they correspond to earlier P.M. times? Actually, looking at layout, likely all outer boxes are for 1–11 P.M. corresponding to 13–23.)

Actually, standard way: The clock shows 1–12, and we label which P.M. hour matches each position. So:

At “1” on clock → 1 P.M.
At “2” → 2 P.M.
...
At “11” → 11 P.M.

But since it says “fill in the missing P.M. hours”, and there are 11 boxes around the clock (excluding 12), we fill them as:

Starting from the box next to 12 (top right) and going clockwise:

Box near 1 → 1 P.M.
Box near 2 → 2 P.M.
Box near 3 → 3 P.M.
Box near 4 → 4 P.M.
Box near 5 → 5 P.M.
Box near 6 → 6 P.M.
Box near 7 → 7 P.M.
Box near 8 → 8 P.M.
Box near 9 → 9 P.M.
Box near 10 → 10 P.M.
Box near 11 → 11 P.M.

Perfect.

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Part 2: Correctly convert the times.

These are 24-hour times being converted to 12-hour format with A.M./P.M.

Rule:
- If time is less than 12:00 → same number + A.M. (except 00:xx becomes 12:xx A.M.)
- If time is 12:00 or more → subtract 12, add P.M. (except 12:xx stays 12:xx P.M.)

Let’s do each:

1. 18:30 → 18 - 12 = 6 → 6:30 P.M.
2. 13:15 → 13 - 12 = 1 → 1:15 P.M.
3. 00:47 → This is midnight → 12:47 A.M.
4. 01:30 → Less than 12 → 1:30 A.M.
5. 23:55 → 23 - 12 = 11 → 11:55 P.M.

All correct.

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Part 3: Fill in the missing 24 hour times to complete each time table.

Given:

| 12 Hour | 24 Hour |
|-------------|-----------|
| 9:00 A.M. | ? |
| 12:30 P.M. | ? |

Rules again:
- A.M. times before 12:00 stay same numerically → 9:00 A.M. = 09:00
- 12:00 P.M. is noon → 12:30 P.M. = 12:30

Wait — actually, 12:00 P.M. is noon, so 12:30 P.M. remains 12:30 in 24-hour? No!

Correction:

In 24-hour time:
- Midnight to 11:59 A.M. → 00:00 to 11:59
- Noon (12:00 P.M.) → 12:00
- 1:00 P.M. → 13:00, etc.

So:
- 9:00 A.M. → 09:00
- 12:30 P.M. → 12:30 ← because 12 P.M. is still 12:xx in 24-hour until 13:00.

Yes! Only when you go past 12:59 P.M. do you start adding 12.

So:

9:00 A.M. → 09:00
12:30 P.M. → 12:30

Now, the clocks below — let’s read them.

First clock:
Hour hand between 2 and 3 → 2 o’clock
Minute hand on 5 → 25 minutes → 2:25 → but is it A.M. or P.M.? Since no indication, probably assume A.M. unless specified. But in context of conversion, maybe we need to write both? Wait, the instruction says “complete each time table” — but only two rows given. Probably the clocks are separate exercises? Looking back:

The section says: “Fill in the missing 24 hour times to complete each time table.” And then there’s a table with two rows filled partially, and then three clocks below. Maybe the clocks are meant to be read and converted?

Actually, re-reading: The black bar says “Fill in the missing 24 hour times to complete each time table.” Then under that, there’s a small table with two entries, and then three analog clocks. Likely, the clocks are additional problems where you read the time and write its 24-hour equivalent.

But the user didn’t specify if those clocks are part of the task to solve. However, since the original image includes them, and the prompt says “solve the problem accurately”, I should include them.

Let’s interpret:

After the table, there are three clocks. We need to read each and write the 24-hour time.

Clock 1:
Hour hand between 2 and 3 → 2
Minute hand on 5 → 25 → 2:25 → assuming A.M. → 02:25

Clock 2:
Hour hand between 7 and 8 → 7
Minute hand on 10 → 50 → 7:50 → A.M. → 07:50

Clock 3:
Hour hand between 5 and 6 → 5
Minute hand on 2 → 10 → 5:10 → A.M. → 05:10

But wait — could any be P.M.? Without context, safest to assume A.M. for morning times. In school worksheets, often default to A.M. unless stated.

Alternatively, perhaps the clocks are meant to match the table? Unlikely.

Another possibility: The “time table” refers to the grid above, and the clocks are extra practice. But since the instruction says “complete each time table”, and there’s only one table shown, maybe the clocks are not part of that specific table.

Looking at the structure:

There’s a header: “Fill in the missing 24 hour times to complete each time table.”

Then immediately below is a table with two rows:

Row 1: 9:00 A.M. → ___
Row 2: 12:30 P.M. → ___

Then below that, three clocks — probably these are additional items to convert, even though not labeled as part of the table. To be thorough, I’ll convert them too.

So final answers for this section:

Table:
- 9:00 A.M. → 09:00
- 12:30 P.M. → 12:30

Clocks:
- Clock 1: 2:25 → 02:25
- Clock 2: 7:50 → 07:50
- Clock 3: 5:10 → 05:10

Assuming all are A.M.

If the worksheet intends some to be P.M., it would usually indicate, but here no indication, so A.M. is safe.

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Final compilation:

Part 1: Clock labels (P.M. hours)
Going clockwise from top-right box:
1 P.M., 2 P.M., 3 P.M., 4 P.M., 5 P.M., 6 P.M., 7 P.M., 8 P.M., 9 P.M., 10 P.M., 11 P.M.

Part 2: Conversions
1. 18:30 = 6:30 P.M.
2. 13:15 = 1:15 P.M.
3. 00:47 = 12:47 A.M.
4. 01:30 = 1:30 A.M.
5. 23:55 = 11:55 P.M.

Part 3: Table and clocks
Table:
9:00 A.M. = 09:00
12:30 P.M. = 12:30

Clocks:
First clock: 02:25
Second clock: 07:50
Third clock: 05:10

All verified.

Final Answer:
[For Part 1: 1 P.M., 2 P.M., 3 P.M., 4 P.M., 5 P.M., 6 P.M., 7 P.M., 8 P.M., 9 P.M., 10 P.M., 11 P.M.]
[For Part 2: 1. 6:30 P.M., 2. 1:15 P.M., 3. 12:47 A.M., 4. 1:30 A.M., 5. 11:55 P.M.]
[For Part 3: 9:00 A.M. = 09:00; 12:30 P.M. = 12:30; Clocks: 02:25, 07:50, 05:10]
Parent Tip: Review the logic above to help your child master the concept of time worksheet 24 hour.
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