A lesson starts at 09:10 and ends at 09:55. How many minutes does it last?
Answer and explanation
45
45
Subjects
Measurement & time
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Sample exercises
An activity starts at 14:20 and lasts 35 minutes. Give the end time in 24-hour format.
Answer and explanation
14:55
14:55
Three 20-minute tasks have two 5-minute breaks between them. Find total minutes.
Answer and explanation
70
3 × 20 + 2 × 5 = 70
A bus leaves at 08:45. You plan to arrive 10 minutes earlier. Give the arrival time in 24-hour format.
Answer and explanation
08:35
08:35
Convert 2 hours 15 minutes to minutes.
Answer and explanation
135
2 × 60 + 15 = 135
A 90-minute block contains 25 minutes of reading and 35 minutes of writing. How many minutes remain?
Answer and explanation
30
90 − 25 − 35 = 30
Study notes
Timetables, durations and buffer time
A start time names a point in the day; duration measures how long an activity lasts.
Grades 3–7Timetables, durations and buffer time · revision card
A start time names a point in the day; duration measures how long an activity lasts.
Grades 3–7Timetables and realistic planning
Times use the displayed 24-hour clock unless stated otherwise.
Grades 3–7Timetables and realistic planning · Revision card
Times use the displayed 24-hour clock unless stated otherwise.
Grades 3–7