Here are the step-by-step solutions for each problem on the worksheet.
Problem 1
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Goal: Find the arrival time.
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Start Time: 11:30 am
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Duration: 35 minutes
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Step 1: Add the minutes to the start time. $30 \text{ minutes} + 35 \text{ minutes} = 65 \text{ minutes}$.
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Step 2: Since 65 minutes is more than an hour (60 minutes), we convert it. 65 minutes is equal to 1 hour and 5 minutes.
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Step 3: Add that 1 hour to 11:00 am, which makes it 12:00 pm. Then add the remaining 5 minutes.
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Result: 12:05 pm
Problem 2
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Goal: Find how long Dakota was at school.
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Start Time: 9:30 am
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End Time: 2:30 pm
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Step 1: Count the hours from 9:30 am to 12:30 pm. That is 3 hours.
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Step 2: Count the hours from 12:30 pm to 2:30 pm. That is 2 more hours.
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Step 3: Add them together: $3 + 2 = 5$ hours.
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Result: 5 hours
Problem 3
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Goal: Find what time dinner will be ready.
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Current Time: 9:15 pm
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Duration: 50 minutes
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Step 1: Add the minutes. $15 \text{ minutes} + 50 \text{ minutes} = 65 \text{ minutes}$.
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Step 2: Convert 65 minutes into hours and minutes. It is 1 hour and 5 minutes.
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Step 3: Add 1 hour to 9:00 pm to get 10:00 pm. Add the remaining 5 minutes.
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Result: 10:05 pm
Problem 4
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Goal: Find how long Jordon worked.
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Start Time: 10:00 am
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End Time: 5:45 pm
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Step 1: Count the full hours from 10:00 am to 5:00 pm.
* 10 to 11, 11 to 12, 12 to 1, 1 to 2, 2 to 3, 3 to 4, 4 to 5. That is 7 hours.
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Step 2: Add the remaining minutes from 5:00 pm to 5:45 pm. That is 45 minutes.
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Result: 7 hours and 45 minutes
Problem 5
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Goal: Find what time the appointment ends.
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Start Time: 11:45 am
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Duration: 30 minutes
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Step 1: Add the minutes. $45 \text{ minutes} + 30 \text{ minutes} = 75 \text{ minutes}$.
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Step 2: Convert 75 minutes. Since 60 minutes is one hour, 75 minutes is 1 hour and 15 minutes.
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Step 3: Add 1 hour to 11:00 am to get 12:00 pm. Add the remaining 15 minutes.
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Result: 12:15 pm
Final Answer:
1. 12:05 pm
2. 5 hours
3. 10:05 pm
4. 7 hours and 45 minutes
5. 12:15 pm
Parent Tip: Review the logic above to help your child master the concept of time worksheet grade 4 word.
