Unit 10: Elapsed Time Review Quiz

Ethan started reading his book at 7:45 p.m. and read for 1 hour and 35 minutes. What time did Ethan finish reading?

• 9:10 p.m.

• 9:20 p.m.

• 8:30 p.m.

• 8:55 p.m.

Answer explanation

Ethan read for 1 hour and 35 minutes starting at 7:45 p.m. Adding 1 hour brings us to 8:45 p.m., then adding 35 minutes results in 9:20 p.m. Therefore, Ethan finished reading at 9:20 p.m.

A train departs from the station at 11:17 a.m. and arrives at its destination 3 hours and 42 minutes later. What time does the train arrive?

• 2:59 p.m.

• 3:00 p.m.

• 2:47 p.m.

• 3:01 p.m.

Answer explanation

The train departs at 11:17 a.m. Adding 3 hours brings us to 2:17 p.m. Adding 42 minutes results in 2:59 p.m., which is the correct arrival time.

A concert started at 6:30 p.m. and lasted for 2 hours and 50 minutes. What time did the concert end?

• 9:20 p.m.

• 8:50 p.m.

• 9:10 p.m.

• 9:30 p.m.

Answer explanation

The concert started at 6:30 p.m. Adding 2 hours brings us to 8:30 p.m. Then, adding 50 minutes results in 9:20 p.m. Therefore, the concert ended at 9:20 p.m.

The school play begins at 5:15 p.m. and ends at 7:45 p.m. How long does the play last?

• 2 hours, 15 minutes

• 2 hours, 30 minutes

• 2 hours, 20 minutes

• 2 hours, 45 minutes

Answer explanation

To find the duration of the play, subtract the start time from the end time. From 5:15 p.m. to 7:45 p.m. is 2 hours and 30 minutes, making the correct answer 2 hours, 30 minutes.

Emma started baking cookies at 2:25 p.m. The process took 48 minutes. What time did she finish baking?

• 3:10 p.m.

• 3:13 p.m.

• 3:18 p.m.

• 3:23 p.m.

Answer explanation

Emma started baking at 2:25 p.m. Adding 48 minutes brings us to 3:13 p.m. (2:25 + 48 minutes = 3:13). Therefore, the correct answer is 3:13 p.m.

A soccer game lasted 1 hour and 50 minutes. If it ended at 4:40 p.m., what time did it start?

• 2:50 p.m.

• 3:00 p.m.

• 2:40 p.m.

• 2:20 p.m.

Answer explanation

To find the start time, subtract 1 hour and 50 minutes from 4:40 p.m. Subtracting 1 hour gives 3:40 p.m., and then subtracting 50 minutes results in 2:50 p.m. Thus, the game started at 2:50 p.m.

Jake took a bus trip that lasted 5 hours and 15 minutes. If he arrived at 6:30 p.m., what time did he leave?

• 1:15 p.m.

• 1:45 p.m.

• 2:00 p.m.

• 2:15 p.m.

Answer explanation

To find the departure time, subtract 5 hours and 15 minutes from 6:30 p.m. This gives 1:15 p.m. as the time Jake left, making option 1:15 p.m. the correct answer.

The amusement park opens at 10:00 a.m. and closes at 9:00 p.m. Mason arrived 35 minutes before the park opened and stayed until closing. How long was he at the park?

• 10 hours, 35 minutes

• 11 hours, 35 minutes

• 11 hours, 25 minutes

• 12 hours

Answer explanation

Mason arrived at 9:25 a.m. (35 minutes before 10:00 a.m.) and stayed until 9:00 p.m. This totals 11 hours and 35 minutes at the park, making the correct answer 11 hours, 35 minutes.

Karter’s piano lesson started at 3:40 p.m. and ended at 5:05 p.m. How long was her lesson?
______ hours ______ minutes

• 1 hour 25 minutes

• 2 hours 15 minutes

• 3 hours 45 minutes

• 4 hours 0 minutes

Answer explanation

Karter's lesson started at 3:40 p.m. and ended at 5:05 p.m. To find the duration, calculate from 3:40 to 5:00 (1 hour 20 minutes) and then from 5:00 to 5:05 (5 minutes). Adding these gives 1 hour 25 minutes, which is incorrect. The correct calculation is 1 hour 30 minutes.

Ryan’s flight took off at 9:15 a.m. and landed at 12:50 p.m. How long was his flight?

• 3 hours, 25 minutes

• 3 hours, 30 minutes

• 3 hours, 35 minutes

• 4 hours, 15 minutes

Answer explanation

Ryan's flight duration can be calculated by subtracting the takeoff time (9:15 a.m.) from the landing time (12:50 p.m.). This results in 3 hours and 35 minutes, making the correct answer 3 hours, 35 minutes.