Which number is missing? · complete text alternativeYear 4 Maths · T2 W11–12 · Assets / V07 alternative · Text version

Source review complete · local suitability still needs review.

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Role

Adult ordinary model; exposed solution separate from genuine blank own work

Complete source

Day 57 ordinary 930−□=586 tags and□−175=428 cards.

Full alternative

Two separate adult unknown-role models. In a fictional tag record 930 start and 586 left give 344 used; 930−344=586. In a different fictional card record 175 used and 428 left give 603 start; 603−175=428. The unknown counts a used amount in the first equation and a starting amount in the second. Card and tag quantities are not combined.

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Original planned geometry and prose ©NeuroForgeIO Pty Ltd 2026, CC BY 4.0; curriculum/source text stays under its own notices. No banknote designs, logos, cultural motif or pupil-image copying.

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Original SVG and PNG constructed in this source candidate. Preserved brief predates construction; different whole source/art and Root Browser acceptance remain pending.

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Reviewed source edition

Source review is complete for this two-week edition. Local suitability and classroom use still need review. Earlier candidate or pending-review words are retained in the original files; full-year coverage, translations and audio are not claimed.

Exact source: 4648f91e381afcd8f44278b0cd20c1791389d9db · 2026-10-13. Source edition, roles and hashes

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Source: https://neuroforge.io/subjectnest/library/resources/year-4/mathematics/term-2/weeks-11-12/assets/V07-alternative-markdown · SubjectNest by NeuroForgeIO Pty Ltd · Keep the complete source and licence companions; item rights remain separate.