Grade 5 Time Worksheets | Free Printables | Math Worksheets - Free Printable

To solve the problem of converting 12-hour time to 24-hour time, we need to follow these rules:

1. For times in the morning (AM):
- If the time is between 1:00 AM and 12:59 AM, keep the hour as it is for hours 1 through 12.
- For 12:00 AM, it becomes 00:00 in 24-hour format.

2. For times in the afternoon (PM):
- Add 12 to the hour for times between 1:00 PM and 11:59 PM.
- For 12:00 PM, it remains 12:00 in 24-hour format.

Let's solve each conversion step by step:

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1. 8:15 PM

- Since it is PM, add 12 to the hour: \( 8 + 12 = 20 \).
- The minutes remain the same.
- Answer: 20:15

2. 7:50 AM

- Since it is AM, the hour remains the same.
- The minutes remain the same.
- Answer: 07:50

3. 4:45 PM

- Since it is PM, add 12 to the hour: \( 4 + 12 = 16 \).
- The minutes remain the same.
- Answer: 16:45

4. 3:30 AM

- Since it is AM, the hour remains the same.
- The minutes remain the same.
- Answer: 03:30

5. 2:55 PM

- Since it is PM, add 12 to the hour: \( 2 + 12 = 14 \).
- The minutes remain the same.
- Answer: 14:55

6. 9:30 AM

- Since it is AM, the hour remains the same.
- The minutes remain the same.
- Answer: 09:30

7. 6:00 PM

- Since it is PM, add 12 to the hour: \( 6 + 12 = 18 \).
- The minutes remain the same.
- Answer: 18:00

8. 5:45 AM

- Since it is AM, the hour remains the same.
- The minutes remain the same.
- Answer: 05:45

9. 1:00 PM

- Since it is PM, add 12 to the hour: \( 1 + 12 = 13 \).
- The minutes remain the same.
- Answer: 13:00

10. 3:00 AM

- Since it is AM, the hour remains the same.
- The minutes remain the same.
- Answer: 03:00

11. 4:15 PM

- Since it is PM, add 12 to the hour: \( 4 + 12 = 16 \).
- The minutes remain the same.
- Answer: 16:15

12. 9:50 AM

- Since it is AM, the hour remains the same.
- The minutes remain the same.
- Answer: 09:50

13. 12:35 PM

- Since it is PM, but the hour is 12, it remains 12.
- The minutes remain the same.
- Answer: 12:35

14. 10:40 AM

- Since it is AM, the hour remains the same.
- The minutes remain the same.
- Answer: 10:40

15. 2:00 PM

- Since it is PM, add 12 to the hour: \( 2 + 12 = 14 \).
- The minutes remain the same.
- Answer: 14:00

16. 7:20 AM

- Since it is AM, the hour remains the same.
- The minutes remain the same.
- Answer: 07:20

17. 3:45 PM

- Since it is PM, add 12 to the hour: \( 3 + 12 = 15 \).
- The minutes remain the same.
- Answer: 15:45

18. 10:55 AM

- Since it is AM, the hour remains the same.
- The minutes remain the same.
- Answer: 10:55

19. 11:00 PM

- Since it is PM, add 12 to the hour: \( 11 + 12 = 23 \).
- The minutes remain the same.
- Answer: 23:00

20. 9:25 AM

- Since it is AM, the hour remains the same.
- The minutes remain the same.
- Answer: 09:25

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Final Answers:

1. 20:15
2. 07:50
3. 16:45
4. 03:30
5. 14:55
6. 09:30
7. 18:00
8. 05:45
9. 13:00
10. 03:00
11. 16:15
12. 09:50
13. 12:35
14. 10:40
15. 14:00
16. 07:20
17. 15:45
18. 10:55
19. 23:00
20. 09:25

Boxed Final Answer:
\[
\boxed{
\begin{array}{ll}
1. & 20:15 \\
2. & 07:50 \\
3. & 16:45 \\
4. & 03:30 \\
5. & 14:55 \\
6. & 09:30 \\
7. & 18:00 \\
8. & 05:45 \\
9. & 13:00 \\
10. & 03:00 \\
11. & 16:15 \\
12. & 09:50 \\
13. & 12:35 \\
14. & 10:40 \\
15. & 14:00 \\
16. & 07:20 \\
17. & 15:45 \\
18. & 10:55 \\
19. & 23:00 \\
20. & 09:25 \\
\end{array}
}
\]