Elapsed Time — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. A Grade 4 itinerary shows a bus ride of 1 h 25 min, then a train ride of 2 h 10 min. The total travel duration is 3 hours and 35 minutes.
1 plus 2 equals 3 hours, and 25 plus 10 equals 35 minutes.
2. A road trip itinerary leaves at 7:00 AM and the schedule shows 4 hours of driving. The arrival time is 11 AM (use 11).
7 AM plus 4 hours equals 11:00 AM.
3. A flight itinerary lists a 2 h 45 min flight followed by a 30 min layover. The total duration is 3 hours and 15 minutes.
45 plus 30 equals 75 minutes, which is 1 hour 15 minutes; add to 2 hours for 3 hours 15 minutes.
4. A Grade 4 family leaves home at 8:15 AM and arrives at the park at 10:45 AM. The duration is 2 hours and 30 minutes.
8:15 AM plus 2 hours is 10:15 AM, and 10:15 to 10:45 is 30 more minutes.
5. A travel schedule shows three driving legs: 45 min, 50 min, and 25 min. The total duration is 2 hours and 0 minutes.
45 plus 50 plus 25 equals 120 minutes, which is exactly 2 hours.
6. An itinerary departs at 9:30 AM with a 3 h 20 min trip. The arrival time is 12:50 PM.
9:30 plus 3 hours is 12:30 PM; 12:30 plus 20 minutes equals 12:50 PM.
7. A Grade 4 student's bike trip itinerary lasts 1 h 50 min and starts at 2:15 PM. The end time is 4 :05 PM.
2:15 plus 1 hour is 3:15; 3:15 plus 50 minutes equals 4:05 PM.
8. A subway itinerary shows a ride of 35 min plus a walk of 15 min. The total duration in minutes is 50.
35 plus 15 equals 50 minutes total.
9. A travel itinerary's full duration is 4 h 15 min. If the start time is 6:30 AM, the end time is 10 :45 AM.
6:30 plus 4 hours equals 10:30 AM; 10:30 plus 15 minutes equals 10:45 AM.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Bus 1 h 30 min + train 2 h 15 min duration
→ 3 hours 45 minutes total
3 hours 45 minutes
Itinerary departs 8:00 AM, arrives 11:45 AM duration
→ 3 hours 45 minutes
3:45 PM
Three legs: 40 min + 50 min + 30 min total
→ 120 minutes
120 minutes
Trip starts 1:20 PM, lasts 2 h 25 min, end time
→ 3:45 PM
3 hours 45 minutes total
Add hours and minutes in each itinerary; total minutes convert to hours when over 60.