Each full side is equal · complete text alternativeYear 4 Maths · T2 W11–12 · Assets / V08 alternative · Text version

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

Complete source

Day 58 ordinary 245+□=390+75.

Full alternative

An adult equality model for 245+□=390+75. The known right side is 465. The missing left part is 220 because 465−245=220. Substitution gives 245+220=465 and 390+75=465. Schematic bars stand for equal whole amounts and are explicitly not to scale; the box value 220 is not the whole-side value 465.

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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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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/V08-alternative-markdown · SubjectNest by NeuroForgeIO Pty Ltd · Keep the complete source and licence companions; item rights remain separate.