Here are the step-by-step solutions for each problem on the worksheet.
1. My mom ran errands for one hour and 45 minutes. If she left at 2:15 P.M., what time did she return?
*
Step 1: Start with the time she left:
2:15 P.M.
*
Step 2: Add the hours first. Add 1 hour to 2:15.
* 2:15 + 1 hour =
3:15.
*
Step 3: Now add the minutes. Add 45 minutes to 3:15.
* 15 minutes + 45 minutes = 60 minutes.
* Since 60 minutes equals exactly 1 hour, we move the clock forward by one more hour.
* 3:00 + 1 hour =
4:00.
*
Answer: She returned at
4:00 P.M.
2. Maggie took a walk. She left at 10:30 A.M. and got home at 1:45 P.M. How long was she gone?
*
Step 1: Count the full hours from 10:30 A.M. to 1:30 P.M.
* 10:30 to 11:30 is 1 hour.
* 11:30 to 12:30 is 1 hour.
* 12:30 to 1:30 is 1 hour.
* Total hours so far:
3 hours.
*
Step 2: Count the remaining minutes from 1:30 P.M. to 1:45 P.M.
* 45 - 30 =
15 minutes.
*
Step 3: Combine the hours and minutes.
*
Answer: She was gone for
3 hours and 15 minutes.
3. The baseball game started at 7:05. It ended at 9:15. How long was the baseball game?
*
Step 1: Count the full hours from 7:05 to 9:05.
* 7:05 to 8:05 is 1 hour.
* 8:05 to 9:05 is 1 hour.
* Total hours:
2 hours.
*
Step 2: Count the remaining minutes from 9:05 to 9:15.
* 15 - 5 =
10 minutes.
*
Answer: The game was
2 hours and 10 minutes long.
4. The birds began chirping at 3:47 A.M. They chirped for 2 hrs. What time did they finish chirping?
*
Step 1: Start with the time they began:
3:47 A.M.
*
Step 2: Add the 2 hours to the start time. We only change the hour number because there are no extra minutes to add.
* 3 + 2 = 5.
* The minutes stay the same (:47).
*
Answer: They finished chirping at
5:47 A.M.
5. Sam spent 92 minutes working on a school project. If he started at 5:30 P.M., what time did he finish?
*
Step 1: Break 92 minutes into hours and minutes.
* 60 minutes = 1 hour.
* 92 - 60 = 32 minutes left over.
* So, 92 minutes is the same as
1 hour and 32 minutes.
*
Step 2: Add the 1 hour to the start time (5:30 P.M.).
* 5:30 + 1 hour =
6:30.
*
Step 3: Add the remaining 32 minutes to 6:30.
* 30 minutes + 32 minutes = 62 minutes.
* Since 62 minutes is more than an hour (60 minutes), we take out 60 minutes to make another hour.
* 62 - 60 = 2 minutes remaining.
* Add that 1 new hour to 6:00 to get 7:00.
* Add the 2 remaining minutes.
*
Answer: He finished at
7:02 P.M.
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Final Answer:
1. 4:00 P.M.
2. 3 hours and 15 minutes
3. 2 hours and 10 minutes
4. 5:47 A.M.
5. 7:02 P.M.
Parent Tip: Review the logic above to help your child master the concept of elapsed time word problems worksheet 3rd grade.
