Elapsed Time Word Problems 1 | Worksheet - Free Printable

Problem Overview:

The task involves calculating the elapsed time for various activities. Elapsed time is the amount of time that passes between a start time and an end time. We will solve each problem step by step.

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Problem 1:

Recess began at 11:12 am. It ended at 11:45 am. How long was recess?

- Start Time: 11:12 am
- End Time: 11:45 am

#### Calculation:
1. The difference in minutes between 11:45 am and 11:12 am:
- From 11:12 to 11:45, we count the minutes:
- From 11:12 to 11:30 is 18 minutes.
- From 11:30 to 11:45 is 15 minutes.
- Total: \( 18 + 15 = 33 \) minutes.

#### Answer:
\[ \boxed{33 \text{ minutes}} \]

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Problem 2:

The assembly started at 3:00 pm. It ended at 3:50 pm. How long was the assembly?

- Start Time: 3:00 pm
- End Time: 3:50 pm

#### Calculation:
1. The difference in minutes between 3:50 pm and 3:00 pm:
- From 3:00 to 3:50 is exactly 50 minutes.

#### Answer:
\[ \boxed{50 \text{ minutes}} \]

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Problem 3:

Soccer practice began at 8:35 am. It ended at 9:50 am. How long was soccer practice?

- Start Time: 8:35 am
- End Time: 9:50 am

#### Calculation:
1. Break it into hours and minutes:
- From 8:35 am to 9:35 am is 1 hour.
- From 9:35 am to 9:50 am is 15 minutes.
- Total: \( 1 \text{ hour} + 15 \text{ minutes} = 1 \text{ hour and } 15 \text{ minutes} \).

#### Answer:
\[ \boxed{1 \text{ hour and } 15 \text{ minutes}} \]

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Problem 4:

Our lunch started at 12:00 pm. We finished at 1:05 pm. How long was our lunch?

- Start Time: 12:00 pm
- End Time: 1:05 pm

#### Calculation:
1. The difference in time:
- From 12:00 pm to 1:00 pm is 1 hour.
- From 1:00 pm to 1:05 pm is 5 minutes.
- Total: \( 1 \text{ hour} + 5 \text{ minutes} = 1 \text{ hour and } 5 \text{ minutes} \).

#### Answer:
\[ \boxed{1 \text{ hour and } 5 \text{ minutes}} \]

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Problem 5:

My best friends and I met at the movies at 6:45 pm. We were picked up at 8:35 pm. How long were we at the movies?

- Start Time: 6:45 pm
- End Time: 8:35 pm

#### Calculation:
1. Break it into hours and minutes:
- From 6:45 pm to 7:45 pm is 1 hour.
- From 7:45 pm to 8:35 pm is 50 minutes.
- Total: \( 1 \text{ hour} + 50 \text{ minutes} = 1 \text{ hour and } 50 \text{ minutes} \).

#### Answer:
\[ \boxed{1 \text{ hour and } 50 \text{ minutes}} \]

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Problem 6:

The exercise video started at 1:37 pm. It ended at 2:20 pm. How long was the exercise video?

- Start Time: 1:37 pm
- End Time: 2:20 pm

#### Calculation:
1. The difference in time:
- From 1:37 pm to 2:37 pm is 1 hour.
- From 2:37 pm to 2:20 pm is a backward shift of 17 minutes (since 2:20 is earlier than 2:37).
- Adjust: \( 1 \text{ hour} - 17 \text{ minutes} = 43 \text{ minutes} \).

#### Answer:
\[ \boxed{43 \text{ minutes}} \]

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Problem 7:

The game started at 7:50 pm. It ended at 10:10 pm. How long was the game?

- Start Time: 7:50 pm
- End Time: 10:10 pm

#### Calculation:
1. Break it into hours and minutes:
- From 7:50 pm to 8:50 pm is 1 hour.
- From 8:50 pm to 9:50 pm is 1 hour.
- From 9:50 pm to 10:10 pm is 20 minutes.
- Total: \( 1 \text{ hour} + 1 \text{ hour} + 20 \text{ minutes} = 2 \text{ hours and } 20 \text{ minutes} \).

#### Answer:
\[ \boxed{2 \text{ hours and } 20 \text{ minutes}} \]

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Problem 8:

The dog's nap started at 7:34 am and ended at 7:57 am. How long was the dog's nap?

- Start Time: 7:34 am
- End Time: 7:57 am

#### Calculation:
1. The difference in minutes:
- From 7:34 am to 7:57 am is 23 minutes.

#### Answer:
\[ \boxed{23 \text{ minutes}} \]

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Problem 9:

Our tea party started at 2:10 pm. It ended at 3:05 pm. How long was our tea party?

- Start Time: 2:10 pm
- End Time: 3:05 pm

#### Calculation:
1. The difference in time:
- From 2:10 pm to 3:10 pm is 1 hour.
- From 3:10 pm to 3:05 pm is a backward shift of 5 minutes.
- Adjust: \( 1 \text{ hour} - 5 \text{ minutes} = 55 \text{ minutes} \).

#### Answer:
\[ \boxed{55 \text{ minutes}} \]

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Problem 10:

I started cooking at 4:55 pm. I finished cooking at 6:18 pm. How long did I cook?

- Start Time: 4:55 pm
- End Time: 6:18 pm

#### Calculation:
1. Break it into hours and minutes:
- From 4:55 pm to 5:55 pm is 1 hour.
- From 5:55 pm to 6:18 pm is 23 minutes.
- Total: \( 1 \text{ hour} + 23 \text{ minutes} = 1 \text{ hour and } 23 \text{ minutes} \).

#### Answer:
\[ \boxed{1 \text{ hour and } 23 \text{ minutes}} \]

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Final Answers:

1. \( \boxed{33 \text{ minutes}} \)
2. \( \boxed{50 \text{ minutes}} \)
3. \( \boxed{1 \text{ hour and } 15 \text{ minutes}} \)
4. \( \boxed{1 \text{ hour and } 5 \text{ minutes}} \)
5. \( \boxed{1 \text{ hour and } 50 \text{ minutes}} \)
6. \( \boxed{43 \text{ minutes}} \)
7. \( \boxed{2 \text{ hours and } 20 \text{ minutes}} \)
8. \( \boxed{23 \text{ minutes}} \)
9. \( \boxed{55 \text{ minutes}} \)
10. \( \boxed{1 \text{ hour and } 23 \text{ minutes}} \)

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These are the solutions with detailed explanations for each problem. If you have any further questions, feel free to ask!