Problem Analysis:
The worksheet contains three time-related word problems involving Jack's morning routine. Let's solve each problem step by step.
---
Problem 1:
Jack usually wakes up at 7 o'clock in the morning. Yesterday, he got up 53 minutes later than usual. What time did Jack wake up?
#### Solution:
1. Jack's usual wake-up time is
7:00 AM.
2. He woke up
53 minutes later than usual.
3. To find the new wake-up time, add 53 minutes to 7:00 AM:
- Start with 7:00 AM.
- Add 53 minutes:
- 7:00 + 53 minutes = 7:53 AM.
#### Final Answer for Problem 1:
$$
\boxed{7:53 \text{ AM}}
$$
---
Problem 2:
Since he got up late, Jack could not take his usual train. He took the next train at twenty past eight in the morning, which was 40 minutes later than his usual train. What time is his usual train?
#### Solution:
1. Jack took the next train at
8:20 AM.
2. This train was
40 minutes later than his usual train.
3. To find the time of his usual train, subtract 40 minutes from 8:20 AM:
- Start with 8:20 AM.
- Subtract 40 minutes:
- 8:20 - 40 minutes = 7:40 AM.
#### Final Answer for Problem 2:
$$
\boxed{7:40 \text{ AM}}
$$
---
Problem 3:
The train ride usually takes half an hour, but there was a 25-minute delay. How many minutes was the train ride yesterday?
#### Solution:
1. The usual duration of the train ride is
half an hour, which is equivalent to
30 minutes.
2. There was a
25-minute delay.
3. To find the total duration of the train ride yesterday, add the delay to the usual duration:
- Usual duration: 30 minutes.
- Delay: 25 minutes.
- Total duration = 30 + 25 = 55 minutes.
#### Final Answer for Problem 3:
$$
\boxed{55 \text{ minutes}}
$$
---
Summary of Answers:
1. Jack woke up at:
$\boxed{7:53 \text{ AM}}$
2. Jack's usual train time is:
$\boxed{7:40 \text{ AM}}$
3. The train ride duration yesterday was:
$\boxed{55 \text{ minutes}}$
---
These solutions are derived step-by-step using basic arithmetic and time calculations. Each problem involves adding or subtracting time intervals, which is a fundamental skill in solving time-related word problems.
Parent Tip: Review the logic above to help your child master the concept of time problem worksheet for grade 3.
