Free Grade 3 Working with Elapsed Time Lesson Plans
Free Grade 3 lesson plans for Working with Elapsed Time: 12 real questions with a full answer key and worked solutions. There are 60 minutes in an hour, so time does not work like ordinary decimals. Add hours and minutes separately and carry 1 hour each time minutes reach 60.
Free
Core
30 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain working with elapsed time
Explain working with elapsed time accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with elapsed time
Calculate working with elapsed time accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with elapsed time
Compare working with elapsed time accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify working with elapsed time
Justify working with elapsed time accurately in a familiar context.
Assessed by: Exit ticket of four short items
Prerequisites
Close these gaps first — each has its own free lesson, worksheet and quiz.
How Working with Elapsed Time works
There are 60 minutes in an hour, so time does not work like ordinary decimals. Add hours and minutes separately and carry 1 hour each time minutes reach 60.
12 practice questions
Easy to hard, 24 marks in total. Try them first, then open the answers.
- 1.A film starts at 8:05 and lasts 45 min. When does it end?[1]
- 2.A film starts at 13:40 and lasts 20 min. When does it end?[1]
- 3.A film starts at 11:45 and lasts 45 min. When does it end?[1]
- 4.A film starts at 11:40 and lasts 20 min. When does it end?[1]
- 5.A film starts at 12:15 and lasts 2 h 25 min. When does it end?[2]
- 6.A film starts at 8:05 and lasts 3 h 20 min. When does it end?[2]
- 7.A film starts at 14:20 and lasts 1 h 20 min. When does it end?[2]
- 8.A film starts at 14:20 and lasts 2 h 45 min. When does it end?[2]
- 9.A film starts at 11:40 and lasts 3 h 40 min. When does it end?[3]
- 10.A film starts at 7:10 and lasts 3 h 30 min. When does it end?[3]
- 11.A film starts at 12:50 and lasts 1 h 10 min. When does it end?[3]
- 12.A film starts at 13:40 and lasts 3 h 55 min. When does it end?[3]
Show answers and working
1. 8:50
Add the hours first, then the minutes. If minutes pass 60, carry 1 hour. Ends at 8:50.
2. 14:00
Add the hours first, then the minutes. If minutes pass 60, carry 1 hour. Ends at 14:00.
3. 12:30
Add the hours first, then the minutes. If minutes pass 60, carry 1 hour. Ends at 12:30.
4. 12:00
Add the hours first, then the minutes. If minutes pass 60, carry 1 hour. Ends at 12:00.
5. 14:40
Add the hours first, then the minutes. If minutes pass 60, carry 1 hour. Ends at 14:40.
6. 11:25
Add the hours first, then the minutes. If minutes pass 60, carry 1 hour. Ends at 11:25.
7. 15:40
Add the hours first, then the minutes. If minutes pass 60, carry 1 hour. Ends at 15:40.
8. 17:05
Add the hours first, then the minutes. If minutes pass 60, carry 1 hour. Ends at 17:05.
9. 15:20
Add the hours first, then the minutes. If minutes pass 60, carry 1 hour. Ends at 15:20.
10. 10:40
Add the hours first, then the minutes. If minutes pass 60, carry 1 hour. Ends at 10:40.
11. 14:00
Add the hours first, then the minutes. If minutes pass 60, carry 1 hour. Ends at 14:00.
12. 17:35
Add the hours first, then the minutes. If minutes pass 60, carry 1 hour. Ends at 17:35.
Worked examples
A film starts at 10:10 and lasts 55 min. When does it end?
- Add the hours first, then the minutes.
- If minutes pass 60, carry 1 hour.
- Ends at 11:05.
- Answer: 11:05
A film starts at 13:05 and lasts 2 h 45 min. When does it end?
- Add the hours first, then the minutes.
- If minutes pass 60, carry 1 hour.
- Ends at 15:50.
- Answer: 15:50
A film starts at 12:45 and lasts 2 h 5 min. When does it end?
- Add the hours first, then the minutes.
- If minutes pass 60, carry 1 hour.
- Ends at 14:50.
- Answer: 14:50
Interactive practice
Free, no account required — answer on screen or print it.
Common mistakes
What learners typically get wrong, and how to fix it.
Treats 1:50 + 20 min as 1:70.
Correction: 60 minutes make an hour: 1:70 is 2:10.
Uses a calculator and gets decimal hours.
Correction: Count on in hours, then minutes, on a timeline.
Teacher tips
- · Use a number line split into hours for durations.
Parent tips
- · Ask how long until dinner from the current time.
Real-life applications
- · Reading timetables, planning a day out.
Assessment objectives
How mastery is evidenced, and which standards it maps to.
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Frequently asked
- Is this Grade 3 Working with Elapsed Time lesson plan really free?
- Yes. Every lesson plans on FreeMathWorksheet is free to use, print and share — no account, no paywall and no watermark.
- What should a learner already know before this?
- Start with Introducing Elapsed Time, Timetables. Each one has its own free lesson, worksheet and quiz.
- How is the lesson plan sequenced?
- Recognition first, then understanding, application, reasoning and finally mastery — the same ladder used across every free resource on the platform.
- What comes next after Working with Elapsed Time?
- Move on to Elapsed Time in Context, Reading Clocks, Timetables, which build directly on this idea.
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