1. How do you know what time it will be in a few hours and a few minutes? For example: The clock shows 12:45. What time will it be in 2 hours and 10 minutes?

2. In this lesson, you will learn how to solve elapsed time word problems in five-minute intervals by using a number line.

3. Let’s Review Start time 6:30am7:30am8:30am End time

4. A Common Mistake 2:45Start time Change of time End time 1:35+ 1 08 : 3

5. Core Lesson Tanya went to daycare. The clock said 9:15am when she arrived. When her mother picked her up, the clock said 2:45pm. How long was Tanya at daycare? Start time End time Change of time

6. 5 minutes1 hour 2:45pm 9:15am2:15pm 5 hours, 30 minutes

7. Core Lesson The clock shows 12:45pm. What time will it be in 2 hours and 10 minutes? Start time End time Change of time

8. 12:45pm 2:45 pm 2:55pm 5 minutes1 hour

9. In this lesson, you have learned how to solve elapsed time word problems in five-minute intervals by using a number line.

10. Guided Practice The pool closed at 4:45 pm. It was open for 7 hours and 15 minutes before it closed. When did it open?

11. Extension Activities Write your own elapsed time word problem to the nearest five-minutes and ask a partner to solve for the unknown part.

12. Gionni can jump rope for 3 minutes and 10 seconds without stopping. If he starts jumping at 11:15 am, what time will he stop?

13. A flashlight batteries lasted for 10 hours and 19 minutes. If Lola turned the flashlight on at 3:35 am, what time did the batteries run out?

14. Quick Quiz 1) David started building a birdhouse at 6:15 pm. He finished at 7:05 pm. How long did it take him to build the birdhouse?

15. 2) The 3 rd grade went on a field trip for 3 hours and 25 minutes. If they left at 11 am, what time did they get back to school?