How do I handle elapsed time that crosses noon?

Count to noon first, then add the afternoon part: 8:45 a.m. to 1:20 p.m. is 4 hours 35 minutes.

How do the 24-hour clock and a.m./p.m. line up?

1 p.m. is 13:00 and 4:30 p.m. is 16:30; subtracting 12 from the 24-hour figure gives the p.m. hour.

P2 Maths Time Paper 3: Word Problems

2026-11-10

Tutor Prep Guide · P2 Maths

Ten original cross-period word problems, each with an answer and a one-line note.

Direct answers　Ten cross-period word problems: 1-3 find elapsed time across noon, add a running time to a start, and step through bus intervals, 4-6 compare arrival with lesson time, subtract on the 24-hour clock and count hour-hand turns, 7-9 use minute-hand degrees, convert hours to minutes and handle an 84-minute span, and item 10 fixes subtracting hours and minutes separately.

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: P2 Maths: Time in Hours and Minutes
Level	P2

02　Questions (10 items)

FoundationHow long is it from 8:45 a.m. to 1:20 p.m.?
FoundationA film lasts 1 hour 45 minutes and starts at 6:20 p.m. When does it end?
FoundationA bus leaves every 25 minutes, with the first at 9:05. When does the fourth bus leave?
IntermediateMei leaves home at 7:40, walks 35 minutes, and lessons start at 8:25. How early is she?
IntermediateHow long is it from 09:50 to 13:15?
IntermediateHow many full turns does the hour hand make in one day of 24 hours?
ChallengeHow many degrees does the minute hand sweep from 12 to 4?
ChallengeAn activity lasts 2 hours 50 minutes. How many minutes is that?
ChallengeHow many minutes pass from 10:48 to 12:12?
Error redoA pupil says 3:40 to 4:10 is 1 hour 30 minutes. What is wrong, and what is the correct length?

03　Answers and one-line notes

#	Answer	One-line note
1	4 hours 35 minutes	To noon is 3 hours 15 minutes, plus 1 hour 20 minutes gives 4 hours 35 minutes.
2	8:05 p.m.	6:20 plus one hour is 7:20, and 45 more minutes brings it to 8:05 p.m.
3	10:20	The fourth bus is three intervals later, 75 minutes, so 9:05 plus 75 minutes is 10:20.
4	10 minutes	7:40 plus 35 minutes is 8:15, and 8:25 minus 8:15 leaves 10 minutes.
5	3 hours 25 minutes	From 09:50 to noon is 2 hours 10 minutes, plus 1 hour 15 minutes gives 3 hours 25 minutes.
6	2 turns	The hour hand completes one turn every 12 hours, so a 24-hour day gives 2 turns.
7	120 degrees	Each 5-minute mark is 30 degrees; four marks give 120 degrees.
8	170 minutes	Two hours is 120 minutes, plus 50 gives 170 minutes.
9	84 minutes	From 10:48 to noon is 72 minutes, plus 12 gives 84 minutes, or 1 hour 24 minutes.
10	30 minutes	He subtracted hours and minutes separately; from 3:40 to 4:00 is 20 minutes, plus 10 more makes 30 minutes.

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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