Elapsed Time — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. A Grade 4 train leaves at 9:20 AM and arrives at 12:05 PM, an elapsed time of 2 hours 45 minutes.
Grade 4 elapsed time across noon counts full hours past 12:00 plus leftover minutes.
2. If a Grade 4 art class runs from 1:35 PM to 3:10 PM, the elapsed time is 1 hour 35 minutes.
Grade 4 students count up by whole hours first, then by minutes to the end time.
3. Grade 4 chores take 25 + 40 + 15 minutes, totalling 80 minutes.
Grade 4 total elapsed time is the sum of all activity durations.
4. A Grade 4 movie of 1 h 50 min equals 110 minutes total.
Grade 4 conversions change hours into minutes by multiplying by 60 before adding leftover minutes.
5. Starting at 10:50 AM with 1 h 25 min of work, a Grade 4 student finishes at 12:15 PM.
Grade 4 elapsed time across noon adds total minutes to the start, converting AM to PM at 12:00.
6. From 2:45 PM to 5:30 PM is a Grade 4 elapsed time of 2 hours 45 minutes.
Grade 4 students separate elapsed time into whole hours and leftover minutes.
7. A Grade 4 hike of 3 h 15 min equals 195 minutes total.
Grade 4 conversions follow the rule: hours times 60 plus leftover minutes.
8. If 240 minutes pass during Grade 4 reading time, that equals 4 hours.
Grade 4 students convert minutes to hours by dividing by 60 when there are no leftover minutes.
9. From 7:50 AM to 1:20 PM is a Grade 4 elapsed time of 5 hours 30 minutes.
Grade 4 elapsed time across AM and PM uses count-up jumps of whole hours then minutes.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
9:20 AM to 12:05 PM elapsed time
→ 2 hours 45 minutes
2 hours 45 minutes
1 h 50 min in total minutes
→ 110 minutes
110 minutes
240 minutes in hours
→ 4 hours
4 hours
10:50 AM plus 1 h 25 min
→ 12:15 PM
12:15 PM
Grade 4 elapsed time switches between unit conversions and count-up strategies depending on the question.