A COMMON PARENT QUESTION

Good at School Maths but Struggling with AJMO? What to Practise

By Ace Achievers · Published 16 October 2026 · Official information checked 14 October 2026

The short answer

School success and unfamiliar problem solving draw on overlapping skills, but they are not identical. An AJMO difficulty may come from recognising the useful idea, organising cases or checking a solution, even when the child knows the school mathematics.

Why does “I know this topic” sometimes fail in a competition?

In a school exercise, the chapter heading often supplies a clue: this is a percentage question or an area question. A competition problem may supply no such label. The child must build a representation, choose a method and notice hidden restrictions before calculation begins.

A lower-than-expected result is therefore not enough to diagnose weak knowledge. It also does not prove the child is careless or unsuitable for challenging mathematics. Ask to see the steps they attempted, then test a related idea in a calmer setting.

Which gap are we actually trying to fix?

What you observePossible gapA useful response
Cannot explain a relevant fraction or area rulePrerequisite knowledgeTeach the concept with simpler examples before returning to the puzzle
Knows the rule when prompted but cannot choose itMethod selectionCompare two problems with different surface stories and the same useful structure
Has an idea but skips or counts cases twiceOrganisationList cases by a fixed first choice and explain how groups stay separate
Solves calmly but makes errors under a timerExecution or timingUse shorter timed sets and a repeatable final check

These are possibilities to investigate, not diagnoses made from a certificate. More than one can occur in the same question.

What does method selection look like in a simple task?

Original teaching example: a shop sells notebooks in packs of 4 and 7. Can a customer buy exactly 23 notebooks using whole packs? A child might start dividing 23 by each pack size and stop when neither division is exact.

A useful representation is 4a + 7b = 23, where a and b are non-negative integers. Try b = 0, 1, 2, 3. The remaining totals are 23, 16, 9, 2; only 16 is divisible by 4, giving four 4-packs and one 7-pack. The skill is recognising that a short organised list can expose the answer.

Now change the target to 22. The child should rebuild the list, not repeat the earlier pack combination. With two 7-packs, 8 remains, giving two 4-packs. Ask why checking b only up to 3 covers the permitted possibilities.

How can parents help without doing the reasoning?

Give one prompt, then time to respond. Naming the method immediately may produce a correct answer while leaving the selection skill untested. Later, offer a fresh task and see whether the child starts independently.

What should the next two weeks focus on?

Choose one recurring gap. In the first week, teach the idea and practise two changed examples. In the second, mix it with other topics and remove the hint. Keep a short note of the first step, the mistake and the improved check.

If the child’s foundations are secure, an Advanced AMC curriculum can provide structured practice with relevant techniques. If they are not, repair them first. Use the next-step guide to decide between the Year 5–6, Year 7–8 and deeper AIMO pathways.

Give practice a clear learning pathway

Explore the complete curriculum, then start the free lessons in your own learning account. These existing AMC and AIMO courses develop related skills; they are not dedicated AJMO courses or official competition entry.

Questions parents ask

Does a low AJMO result mean my child is weak at maths?

Not by itself. Review the attempted reasoning and a fresh related task to distinguish knowledge, strategy, organisation and timing gaps.

Should we just do more difficult questions?

Increase challenge after identifying the learning need. A harder question is less useful if the child still lacks a prerequisite or has no method for getting started.

How can a parent help if they do not know the solution?

Ask the child to restate conditions, draw a representation, try a smaller case and explain their check. If neither of you can resolve the mathematics, use a reliable worked explanation.

What is stronger evidence than repeating the same question?

An independent attempt at a changed problem, with a sensible first step and an explanation of why the method fits.