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 How long from 10:50 pm to midnight? (minutes)
Show worked solution
10:50 → 11:00 is 10 minutes, then a whole hour: 70 minutes.
2 ¾ of an hour = ? minutes
Show worked solution
45 minutes.
3 Today is Monday. What day is it in 7 days?
Show worked solution
Whole weeks return to the same day → Monday.
Level 2 · Core
4 How long from 9:50 pm to 6:30 am?
Show worked solution
10 min → 10 pm, 8 h → 6 am, 30 min → 8 h 40 min.
5 Today is Thursday. What day is it in 15 days?
Show worked solution
15 = 2 weeks r 1 → Friday.
6 A bus reaches stops at 2:05, 2:19, 2:36. You arrive at the second stop at 2:20. How long until the NEXT bus if buses run every 30 min?
Show worked solution
Next bus at that stop: 2:19 + 30 = 2:49 → wait 29 minutes.
Level 3 · Challenge
7 A movie runs 2¼ hours, starting 7:50 pm. When does it end? (as a digital time)
Show worked solution
7:50 + 2 h = 9:50, + 15 = 10:05 pm.
8 3 March was a Friday. What day was 24 March?
Show worked solution
21 days = exactly 3 weeks → Friday again.
9 Dinner at 6:30 pm. Roast: 90 min cooking, 15 min resting, 10 min carving. Latest time to start cooking? (as a digital time)
Show worked solution
6:30 − 10 − 15 − 90 = 4:35 pm.