Hi, ELSA ✷
Everything here is yours. Pick a thing.
- Every flagged questionEvery question with a dedicated step-by-step page, from every paper, in one place. · guide · a browsable index — filter by paper, status or topic, or jump straight to one
- Working backwards through the libraryStarting from the end and undoing each step — Question 31 of SMC 2024. · guide · a guide — read it
- The spider that slipped down the wallClimbing, slipping, and climbing again — fractions of a wall with a hidden whole — Question 29 of SMC 2024. · guide · a guide — read it
- Cutting three ropes into equal piecesThe biggest piece that fits all three ropes with nothing left over — Question 27 of SMC 2024. · guide · a guide — read it
- Three fruits, weighed two at a timeAdd all three weighings and halve — turning pair-weights into one total — Question 26 of SMC 2024. · guide · a guide — read it
- Balloons all the way round the roomA pattern that repeats every 80 cm — count repeats, not balloons — Question 24 of SMC 2024. · guide · a guide — read it
- The box, the watermelon, and the strawberriesWork out one weight from what the total GAINED, not what the box itself weighs — Question 23 of SMC 2024. · guide · a guide — read it
- The bead jar that keeps filling upRed beads keep arriving, but the green ones never change — the trick behind Question 21 of SMC 2024. · guide · a guide — read it
- Mangoes and pears, bought in matching groupsBuying the same number of two fruits — find a group size both deals divide evenly — Question 25 of SMC 2024. · guide · a guide — read it
- Round tables, rectangular tables, and 205 hungry customersTesting every count inside a narrow range — Question 31 of the SMC 2026 mock. · guide · a guide — read it
- A corridor measured two different waysPlants every 4 m, lanterns every 6 m — comparing over a length both fit — Question 30 of the SMC 2026 mock. · guide · a guide — read it
- Roses, lilies, daisies — and a basket that keeps growingBuying more daisies grows the total you are comparing against — Question 29 of the SMC 2026 mock. · guide · a guide — read it
- Two rectangles overlapping to make a squareWhy the overlap hides edges, and how much perimeter it takes with it — Question 28 of the SMC 2026 mock. · guide · a guide — read it
- The tortoise that never stops, and the rabbit that restsUsing the steady racer as the clock — Question 27 of the SMC 2026 mock. · guide · a guide — read it
- Squares cut from a sheet, with a strip left overFitting squares along a length, and what the leftover strip tells you — Question 26 of the SMC 2026 mock. · guide · a guide — read it
- Bento, mochi, and tea for three friendsSwapping mochi for tea, then cancelling the bento sets — Question 22 of the SMC 2026 mock. · guide · a guide — read it
- Mary, Larry, and the plates that cost the sameWhen two people spend the same amount, the GAP between them never changes — Question 21 of the SMC 2026 mock. · guide · a guide — read it
- Trees in a row — count the gaps, not the treesThe classic equally-spaced trap — Question 19 of the SMC 2026 mock. · guide · a guide — read it
- How many sixths fit in 2 wholes?Cutting whole shapes into sixths — Question 2 of the SMC 2026 mock. · guide · a guide — read it
- Three friends, weighed two at a timeThe same trick as SMC 2024's fruit — sort the readings before using them — Question 15 of the SMC 2026 mock. · guide · a guide — read it
- Muffins, and the cheapest way to buy 57Three different deals, and pricing the leftovers two ways — Question 10 of the SMC 2026 mock. · guide · a guide — read it
- My Reading JourneyThe reading log as one booklet — a cover and the three pages, in a single PDF to print and staple. Blank lines for a name, a class, a teacher and the year. · to print · cover + contents in one PDF · US Letter
- Flashcards — clothes, things and creaturesThe fourth set: jeans, T-shirt, dress, skirt, shoes, car, computer, balloon, kite, snake, fish, alien. Dress and skirt are the pair she mixes up, so they are drawn as the same shape one part apart. · English · cards to tap through
- Flashcards — a house and its gardenThe third set: door, window, roof, chimney, wall, balcony, stairs, basement, mat, grass, trees, leaves. Six of them are parts of the same house, drawn as the same house. · English · cards to tap through
- SMC 2024 — Primary 4 (Grade 4) Contest PaperThe original paper as a PDF, with the figures exactly as the publisher printed them — for when the reprinted question is not enough. · past paper · the original paper · 2024-SMC-G4 - TS1729.pdf
- SMC 2024 — Primary 4 (Grade 4) Contest PaperEvery answer, with the method under it and the mistake to watch for. Best opened after you have had a go. This paper prints NO answers, so these were worked out here and can be argued with. · answer key · 31 questions · every answer, method and trap
- Singapore Math Challenge 2023 — Primary 4 Contest PaperThe original paper as a PDF, with the figures exactly as the publisher printed them — for when the reprinted question is not enough. · past paper · the original paper · 2023 Singapore Math Challenge Grade 4.pdf
- Singapore Math Challenge 2023 — Primary 4 Contest PaperEvery answer, with the method under it and the mistake to watch for. Best opened after you have had a go. The answers are the published ones; the explanations were written here. · answer key · 45 questions · every answer, method and trap
- SINGA 2021 Assessment — Primary 4 (SMC Practice Book)The original paper as a PDF, with the figures exactly as the publisher printed them — for when the reprinted question is not enough. · past paper · the original paper · SMC Primary 4.pdf
- SINGA 2021 Assessment — Primary 4 (SMC Practice Book)Every answer, with the method under it and the mistake to watch for. Best opened after you have had a go. Part published key, part worked out here — each question says which. · answer key · 45 questions · every answer, method and trap
- SMC 2026 Mock Exam — Grade 4 (Geniebook)The original paper as a PDF, with the figures exactly as the publisher printed them — for when the reprinted question is not enough. · past paper · the original paper · MockTestSMC_G4_2026 - WS1621.pdf
- SMC 2026 Mock Exam — Grade 4 (Geniebook)Every answer, with the method under it and the mistake to watch for. Best opened after you have had a go. This paper prints NO answers, so these were worked out here and can be argued with. · answer key · 31 questions · every answer, method and trap
- Flashcards — containers, party, verbs, prepositionsThe second set of cards: what things come in, what you do, and where things are. · English · cards to tap through
- Flashcards — people, animals, objects, placesThe A7 picture vocabulary, as cards to tap through. Units 5 to 8. · English · cards to tap through
- Movers Speaking — Units 5 to 8Out loud, with a person. The page asks and models; a grown-up marks it from the printed card. · English · speaking · 4 parts · 17 marks
- Movers Listening — Units 5 to 8Five recordings, played twice, with a sheet to print. The audio is the question, so it is a real recording and not a robot voice. · English · listening · 5 parts · 25 marks
- Sharing in a ratioAn takes 3 while Bình takes 4, and they end up with 133 — why the parts trick works, and what changes when the question gives you a gap instead of a total. (#32) · guide · a guide — read it
- Two towers, the same height6 cubes reach as high as 5 cylinders — so why does the working say 5 : 6? Reading a ratio off a picture, and the check that catches you when you read it backwards. (#32) · guide · a guide — read it
- Movers Progress Test — Units 5 to 8The written paper — ninety minutes, printed rather than marked on screen. · English · written paper · 6 parts · 50 marks
- SMC Primary 4 — Drill 3: counting without losing countShort enough to finish in one sitting — the browser marks it and she sends the result back. Topics: logic · counting. · drill · 6 questions · 12 marks · about 12 minutes
- How many rectangles?Counting without losing count — pick two lines, then two more. (#32) · guide · a guide — read it
- How many ways from A to B?The add-as-you-go trick, and the bump in the figure that catches people. (#32) · guide · a guide — read it
- SMC Primary 4 — Drill 2: bars and unitsShort enough to finish in one sitting — the browser marks it and she sends the result back. Topics: word problem · model. · drill · 5 questions · 10 marks · about 10 minutes
- The bar modelWhen someone gives someone else something — the trick behind Drill 1, Question 5. Tap “Teach me this” and it explains itself out loud. · guide · a guide — read it, or tap “Teach me this” and let it explain itself out loud
- SMC Primary 4 — Drill 1Short enough to finish in one sitting — the browser marks it and she sends the result back. Topics: data · tables graphs, fraction · of quantity, number · factors multiples, and more. · drill · 5 questions · 10 marks · about 10 minutes
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