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Primary 2 Mathematics: Carrying, Times Tables and Word Problems
Carry and borrow, written small before the sum starts
Almost every Primary 2 loss comes from an unwritten carry or borrow rather than from not understanding: one skipped step in mental arithmetic moves the answer by ten. The rule is small and absolute: a tiny digit above the column before the sum is worked, so a wrong answer still shows exactly which step broke.
How is Primary 2 Mathematics assessed, and what does each part carry?
Section A Quick computation: 12 short questions, 1 mark each: times tables, place value and number (12 marks); Section B Short questions: 4 questions, 2 marks each: 3- and 4-digit addition and subtraction wit (8 marks); Section C Word problems: 4 questions, 5 marks each: multiplication contexts, comparing by subtr (20 marks)
Assessment at a glance (2027)
| Component | Content | Weighting | Duration |
|---|---|---|---|
| Section A Quick computation | 12 short questions, 1 mark each: times tables, place value and number words, unit conversion, coins, shape properties | 12 | 12 min |
| Section B Short questions | 4 questions, 2 marks each: 3- and 4-digit addition and subtraction with borrowing, division, pictogram reading | 8 | 13 min |
| Section C Word problems | 4 questions, 5 marks each: multiplication contexts, comparing by subtraction, division with remainders, shopping and change | 20 | 20 min |
The table above describes how this paper is laid out; it is not an official examination structure from the EDB or any school. P2 pacing: 20 questions in 45 minutes. Slow times tables are the biggest time leak this year – ten seconds on 7 x 8 across the paper costs two to three minutes. Spend three minutes reciting the 2 to 9 tables before you start the clock.
What each paper is actually testing
| Paper | Drill focus | How marks are lost |
|---|---|---|
| Section A Quick computation | Times tables must come instantly; move on after 30 seconds | A carry is dropped and the answer is ten short. |
| Section B Short questions | Line up the columns; dot the tens digit whenever you borrow | A smaller digit minus a larger one is simply reversed. |
| Section C Word problems | For remainders, state the remainder and check it is smaller than the divisor | Metres and centimetres, or hours and minutes, are written as the same number. |
What is each Primary 2 Mathematics paper really testing, and what should you drill?
Section A Quick computation: Times tables must come instantly; move on after 30 seconds; Section B Short questions: Line up the columns; dot the tens digit whenever you borrow; Section C Word problems: For remainders, state the remainder and check it is smaller than the divisor
Drill order: by topic, then by year, then the mark scheme
| Step | What you do | Why |
|---|---|---|
| 1. By topic | Work through each topic, starting with the paper that allows least help (no calculator / closed book) | Exposes what is genuinely not understood |
| 2. By year | Whole papers to time, one or two a week | Trains pace, stamina and question selection |
| 3. Mark scheme | Go through the marking scheme question by question and log the scoring steps you missed | Most lost marks are written wrong, not thought wrong |
Should drilling go by topic first or by year?
By topic first, then whole papers by year, then the mark scheme. The first third of the time goes topic by topic (8-10 years of the same topic back to back), the middle switches to timed whole papers, and the last fortnight only redoes the recurring errors from your log.
A 12-week drilling timetable
| Week | Phase | What to do |
|---|---|---|
| Weeks 1-3 | By topic: foundation | Topic by topic, starting with the easiest marks, building habits and recall |
| Weeks 4-6 | By topic: core | 8-10 years of the same topic back to back, errors classified by topic |
| Weeks 7-8 | By topic: advanced and electives | Elective and higher-order topics, now under time pressure |
| Weeks 9-10 | By year: timed papers | One full paper a week, timed, no reference materials |
| Week 11 | Mark scheme work | Question by question against the marking scheme; list the scoring steps you omitted |
| Week 12 | Plug holes and simulate | Only the recurring errors from your log, then one full exam simulation |
Subject-specific weighting for this timetable: Weeks 1-3: ten vertical sums a day with the carry and borrow written out, untimed. Weeks 4-6: times tables two blocks a week, each followed by ten matching multiplications. Weeks 7-9: one set each of metres and centimetres, hours and minutes, answers always with units. Weeks 10-12: two timed papers a week, then only the question types already missed.
Use it properly: this is not a checklist to finish. Every week must keep time for redoing errors, or from week 9 you will be repeating the same batch.
Pacing
| Paper | Time | Suggested split |
|---|---|---|
| Section A Quick computation | 12 min | 12 min |
| Section B Short questions | 13 min | 13 min |
| Section C Word problems | 20 min | 20 min |
How should the time be split inside each Primary 2 Mathematics paper?
Section A Quick computation: 12 min; Section B Short questions: 13 min; Section C Word problems: 20 min
The drilling mistakes that cost the most marks
| Mistake | What it looks like | What actually happens | Instead |
|---|---|---|---|
| Not reducing the tens after borrowing | 802 – 457 worked as 465 | The whole item is wrong – the commonest 3-digit slip | Dot the tens digit the moment you borrow, and add back to check |
| Remainder larger than the divisor | 29 / 4 answered as 6 remainder 5 | A conceptual error that loses the word-problem marks | Compare as soon as you finish: remainder must be smaller than the divisor |
| Ignoring the pictogram key | Counting each symbol as one book | The answer is out by a whole factor | Read what one symbol stands for, then multiply |
| Mixed-up tables | 7 x 8 written as 54 | Marks lost and the whole paper slowed | Recite the 2 to 9 tables for three minutes before starting |
The error log and the mark scheme
Three columns: the question with the key words circled; the correct column working with its carry marks; whether the loss was a missing carry, a wrong table fact, a wrong unit or misreading. Missing marks are written above the question and the item redone three times.
How many years should you drill?
Question shapes at this level barely change between years, so three to five years covers addition, subtraction, multiplication and units, while school pacing and textbook editions differ, so the class timetable sets the order.
How many years of past papers is enough?
Question shapes at this level barely change between years, so three to five years covers addition, subtraction, multiplication and units, while school pacing and textbook editions differ, so the class timetable sets the order.
Frequently asked questions
Is this page a mock paper or a drilling guide?
This is the Primary 2 Mathematics drilling guide: assessment structure, drill order, a 12-week timetable, pacing, common mark losses and the error-log method. For questions with answers, use the Primary 2 Mathematics mock papers linked under Related.
By topic or by year first?
By topic. Eight to ten years of the same topic back to back is what exposes repeating errors; going straight to whole papers just repeats the same batch under time pressure.
How should the error log be written?
Do not copy out questions. Per error record four things: question reference, which step failed (concept, wording, calculation), what the mark scheme requires, and the correct action next time.
Mental arithmetic is fast but often a place value out. Ban it?
No, but split it by size: two-digit and larger sums are always written vertically, single digits and table facts stay mental.
Can word problems start before the tables are solid?
Only once any single fact can be answered without hesitation; before that, word problems rehearse the error.
Official references
| Resource | What to use it for |
|---|---|
| https://www.edb.gov.hk/attachment/en/curriculum-development/kla/ma/curr/pmc2017_e.pdf | EDB Learning Content of Primary Mathematics (2017): P2 units 2N1-2D1 |
| https://www.tutorzone.com.hk/en-primary-maths-p1-mock-2027/ | Primary 1 paper: secure addition and subtraction to 100 first |
| https://www.tutorzone.com.hk/en-primary-maths-p3-mock-2027/ | Primary 3 paper: 5-digit numbers, multiplication and fractions |
Related: practice area · Primary 1 paper · Primary 3 paper
Next step: find a tutor / register as a tutor
After drilling, the hard part is telling a conceptual error from a writing error. Tell us the year group, the school and your available times, and TutorZone will match you with a tutor who knows the HKEAA assessment requirements.
Demand for tutors in this subject is steady, and those who can explain the marking scheme and where marks are won are especially sought after. Register free; you pay only when a match succeeds.