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IMO Grade 3 practice: explain the pattern, not just the answer

A pattern question becomes easier when you can say exactly what changes. These original short tasks practise noticing, modelling and checking before choosing an answer.

The key idea

Use this small reasoning set alongside the current school syllabus and official SOF resources. It is independent BananaLearn practice, not an official IMO paper or a prediction of exam questions.

By BananaLearn · Updated 30 October 2026

Dates and official information checked 30 October 2026. Follow the linked official source and school instructions for later changes.

Before you start: Place value, addition, subtraction, equal groups and simple measures.

Dates and official context

The official 2026–27 IMO schedule includes 26 November and 10 December 2026 as remaining dates after 30 October. Schools choose their exam date. Confirm arrangements with the school; this guide does not register a child or guarantee a place. Check the official schedule again before making plans.

Use this as a reasoning workbook, not a full mock

The questions below deliberately mix short calculations, two-step situations and explanations. They are original BananaLearn practice, not copied SOF questions, an official paper or a complete representation of the exam syllabus. Use the linked official resources for the current pattern and school arrangements.

Split the set into groups of four or five. On the first attempt, let the child draw or use counters. Record whether they solved it independently, after a hint, or after seeing a solution. These categories help choose the next lesson; they are not an exam score prediction.

A two-by-two grid contains four small squares and one large square. Try counting before reading the answer.
A two-by-two grid contains four small squares and one large square. Try counting before reading the answer.

Model the problem before selecting an operation

For “four shelves with six books each”, draw four equal groups. For “six books shared between two shelves”, draw two receiving groups. Both use the same objects but ask different questions. Label the units so a number of shelves is not confused with a number of books.

In two-step problems, write the intermediate answer with its unit. Three packs of eight cards give 24 cards; giving away five leaves 19 cards. A final answer of 24 shows the first step was completed but the whole question was not.

Review an error by its cause

Misread: the child missed remaining. Method: they added instead of multiplying equal groups. Calculation: the method was appropriate but 4×6 was recalled incorrectly. Explanation: the answer is correct but the child cannot show why. Respond to the specific cause.

For a misread question, reread and underline the requested quantity. For a method difficulty, draw the situation. For a calculation slip, practise the needed fact in context. Finish with a fresh example rather than reciting the original answer.

Worked examples: follow each decision

Complete 4, 9, 14, 19, __.

  1. Find the differences: each step adds 5.
  2. 19 + 5 = 24.
  3. Check every visible step; one matching pair is not enough to establish the intended rule.

Three trays have 8 cups each. Five cups are used. How many remain?

  1. First find the starting total: 3 × 8 = 24.
  2. Then subtract used cups: 24 − 5 = 19.
  3. A drawing of three groups helps distinguish trays from cups.

20 questions with explained answers

Attempt a short group of questions before opening the solutions. Use a drawing or written method where helpful. Explain the answer, then try a similar question with a detail changed.

  1. Continue 7, 14, 21, 28, __.

    Show answer and reasoning

    35

    Each step adds 7.

  2. What is the value of 6 in 364?

    Show answer and reasoning

    60

    The digit is in the tens place.

  3. Four bags hold 6 marbles each. Total?

    Show answer and reasoning

    24

    4 × 6 = 24.

  4. 30 counters shared equally among 5 children?

    Show answer and reasoning

    6 each

    30 ÷ 5 = 6.

  5. ₹50 minus a ₹17 purchase: change?

    Show answer and reasoning

    ₹33

    50 − 17 = 33.

  6. Half past 3 plus 20 minutes?

    Show answer and reasoning

    3:50

    Add 20 minutes to 3:30.

  7. Which is greater: 408 or 480?

    Show answer and reasoning

    480

    Hundreds match; compare tens.

  8. A square has sides 4 cm. Distance around?

    Show answer and reasoning

    16 cm

    Add all four equal sides: 4 × 4.

  9. Continue 3, 6, 12, 24 using the doubling rule.

    Show answer and reasoning

    48

    Each term is twice the previous term.

  10. Use digits 2, 0 and 7 once to make the smallest three-digit number.

    Show answer and reasoning

    207

    The hundreds digit cannot be zero.

  11. How many tens are in 430?

    Show answer and reasoning

    43 tens

    430÷10=43.

  12. Three shelves hold 9 books each. Add 5 more books. Total?

    Show answer and reasoning

    32

    3×9+5=32.

  13. A 2-by-3 grid has how many small cells?

    Show answer and reasoning

    6

    Two rows of three.

  14. A 2-by-2 square grid: how many squares of all sizes?

    Show answer and reasoning

    5

    Four small squares and one large square.

  15. Start at 2:45. Add 30 minutes.

    Show answer and reasoning

    3:15

    15 minutes to 3:00, then 15 more.

  16. Buy two ₹12 notebooks with ₹50. Change?

    Show answer and reasoning

    ₹26

    Cost ₹24; 50−24=26.

  17. A number is 10 more than 298.

    Show answer and reasoning

    308

    Adding a ten changes the tens and may cross a hundred.

  18. Split 18 counters equally into 3 groups, then add 2 to each. How many per group?

    Show answer and reasoning

    8

    18÷3=6; 6+2=8.

  19. Which is longer: 1 m or 90 cm?

    Show answer and reasoning

    1 m

    1 m=100 cm.

  20. There are 5 children ahead of Ana and 3 behind. How many in the line?

    Show answer and reasoning

    9

    Include Ana: 5+1+3.

Check what you can now explain

  • Attempt independently before checking.
  • Explain why the answer works.
  • Retry the underlying skill with a changed example.

Keep these distinctions clear

  • Do not time every first attempt; understanding the method comes first.
  • Avoid calling this a past paper, official mock or complete syllabus test.

Save a useful copy

Download the practice and answer pack with BananaLearn branding and the matching guide address. Questions and answers are separated so you can attempt the work first.

Download printable PDF

Keep the ideas connected

For help with an ongoing school-learning difficulty, read how Maths tutoring works or ask about English or Science support. Share a specific example your child found difficult.

Sources and scope

Original explanations, examples, visual models and practice by BananaLearn. This guide is not an official textbook extract, exam paper or endorsed assessment resource.

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