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 is it from 3:40 to 5:10?
Show worked solution
20 + 60 + 10 minutes = 1 h 30 min.
2 How long is it from 9:50 pm to midnight?
Show worked solution
2 h 10 min.
3 How many minutes is it from 8:15 am to 11:45 am?
Show worked solution
3 × 60 + 30 = 210 minutes.
Level 2 · Core
4 How long is it from 11:40 pm to 2:45 am?
Show worked solution
20 min + 2 h 45 min = 3 h 5 min.
5 How long is it from 0745 to 1215?
Show worked solution
15 + 240 + 15 minutes = 4 h 30 min.
6 A journey takes 50 hours. That is 2 days and how many hours?
Show worked solution
50 − 48 = 2 hours.
Level 3 · Challenge
7 A bus reached the depot at 6:05 pm after a 40-minute route, a 15-minute break, and a 25-minute route before that.1 The three parts add to 80 minutes.
2 The first route began at 4:45 pm.
3 The first route began at 5:25 pm.
Which statements are correct?
2 The first route began at 4:45 pm.
3 The first route began at 5:25 pm.
Which statements are correct?
Show worked solution
40 + 15 + 25 = 80 min (1 ✓). 6:05 − 80 min = 4:45 pm (2 ✓, 3 ✗). 1 and 2.
8 A train leaves on Saturday at 2200 and the journey takes 30 hours. Write 30 hours as days and hours, and give the arrival time in 24-hour time (it arrives on Monday).
Show worked solution
1 day and 6 hours. Sunday 2200 + 6 h = Monday 0400.
9 A 20-hour flight leaves on Friday at 1300. At what time does it land, in 24-hour time?
Show worked solution
Friday 1300 + 11 h = Saturday 0000; + 9 h = 0900 on Saturday.