Work through the levels in order. Type your answer and press Check — open the worked solution if you get stuck. Answers like -6, 3/4 or 0.25 are typed exactly as shown. A ⭐ Bonus Challenge at the end is extra credit — skip it if the rest was hard work.
Level 1 · Warm-up
1 Is 7 o'clock in the morning written am or pm?
Show worked solution
Morning times are am.
2 A lesson runs from 9:00 am to 9:45 am. How many minutes is that?
Show worked solution
From 9:00 to 9:45 is 45 minutes.
3 Is 8:30 in the evening am or pm?
Show worked solution
Evening times are pm.
Level 2 · Core
4 School runs 8:30 am to 3:00 pm. How long is that?
Show worked solution
8:30 am to 12:00 is 3 h 30 min, then 12:00 to 3:00 pm is 3 h. Altogether 6 h 30 min.
5 A trip starts at 9:35 am and lasts 40 minutes. What time does it arrive?
Show worked solution
9:35 + 25 min = 10:00, then 15 min more makes 10:15 am.
6 You sleep from 9:00 pm to 6:30 am. How long is that?
Show worked solution
9:00 pm to midnight is 3 h, then midnight to 6:30 am is 6 h 30 min. Altogether 9 h 30 min.
Level 3 · Challenge
7 A train leaves at 11:40 am and the trip takes 1 hour 50 minutes. What time does it arrive?
Show worked solution
11:40 am + 1 h = 12:40 pm, then + 50 min = 1:30 pm.
8 A swimming lesson finishes at 4:15 pm and lasted 75 minutes. What time did it START?
Show worked solution
4:15 pm − 1 h = 3:15 pm, then − 15 min = 3:00 pm.
9 A shop opens 9:00 am to 5:30 pm on weekdays. How many hours is it open across 5 weekdays?
Show worked solution
One day is 8 h 30 min. Five days: 5 × 8 h = 40 h, plus 5 × 30 min = 150 min = 2 h 30 min. Altogether 42 h 30 min (42.5 hours).
⭐ Bonus Challenge · only if the rest felt easy
10 A movie starts at 6:45 pm and runs for 1 hour 50 minutes. What time does it finish?
Show worked solution
6:45 pm + 1 hour = 7:45 pm. Then + 50 minutes: 15 minutes takes you to 8:00 pm, and 35 minutes more makes 8:35 pm.