Why learn both the 12-hour and the 24-hour clock?

Timetables, tickets and digital clocks mostly use the 24-hour clock, while everyday speech uses am and pm, so pupils need both.

How do I work out a time that crosses midnight?

Count the minutes up to 24:00 first, then add the minutes after 00:00, so the change of day is not lost.

How long should this paper take?

About 20 minutes; check the answers straight away and redo anything that was wrong.

P3 Maths Time and Time Intervals Paper 2: Intermediate

2026-11-09

Tutor Prep Guide · P3 Maths

Ten original items, each with an answer and a one-line explanation.

Direct answers　Items 1-3 are basic, 4-6 intermediate and 7-9 challenge, with item 10 as the error review. Time yourself first, then check each answer and redo what is wrong.

01　Paper details (check answers afterwards)

Item	Detail
Questions	10
Suggested time	20
Difficulty mix	Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1
Chapter	Chapter: P3 Maths: Time and Time Intervals
Level	P3

02　Questions (10 items)

FoundationHow many minutes pass from 09:25 to 11:05?
FoundationWhat is 3 hours 40 minutes plus 2 hours 35 minutes?
FoundationWhat is 2 hours 20 minutes minus 55 minutes?
IntermediateWhat time is 45 minutes after 23:40?
IntermediateHow many minutes are there in a day?
IntermediateEach lesson lasts 40 minutes. How long are 5 lessons in a row?
ChallengeSchool runs from 08:00 to 15:30 with a 1-hour lunch break. How much lesson time is that?
ChallengeAn activity starts at 14:50 and lasts 1 hour 25 minutes. When does it end?
ChallengeHow many minutes are there in 4 hours 15 minutes?
Error redoReview: a pupil said 2 hours 45 minutes is 245 minutes. What is correct?

03　Answers and one-line notes

#	Answer	One-line note
1	100 minutes	09:25 to 10:00 is 35 minutes and 10:00 to 11:05 is 65 minutes, giving 100 minutes in all.
2	6 hours 15 minutes	40 plus 35 is 75 minutes, that is 1 hour 15 minutes, so 3 plus 2 plus 1 makes 6 hours.
3	1 hour 25 minutes	140 minus 55 is 85 minutes, which is 1 hour 25 minutes.
4	00:25 the next day	23:40 plus 20 minutes reaches 24:00, then 25 more minutes gives 00:25.
5	1440 minutes	24 times 60 is 1440 minutes.
6	3 hours 20 minutes	40 times 5 is 200 minutes, which is 3 hours 20 minutes.
7	6 hours 30 minutes	08:00 to 15:30 is 7 hours 30 minutes, and taking away 1 hour leaves 6 hours 30 minutes.
8	16:15	14:50 plus 1 hour is 15:50, and 25 more minutes gives 16:15.
9	255 minutes	4 times 60 is 240, and 15 more makes 255 minutes.
10	165 minutes	2 times 60 plus 45 is 165; you cannot simply put 2 and 45 side by side.

04　What to do after marking

After marking, redo only the wrong items and write down which step went wrong (formula, unit, or misread number).
Repeat the same item two days later; move to the next paper only when both attempts are correct.
Parents only need the answer and note columns; there is no need to explain every item.

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Questions and answers are written originally by the TutorZone team and are not taken from any school, publisher or examination authority paper. Every value is checked by computer.