# Australian Curriculum v9 crosswalk · Year 7 mathematics Weeks 3–4

These five links are **partial content-description encounters**, not full Year 7 curriculum coverage, an achievement-standard judgement or local state/territory approval. Exact wording, code and row below are pinned to the official workbook import; the taught slice states the work actually present and its limit.

Source: [official ACARA v9 workbook](https://www.australiancurriculum.edu.au/content/dam/en/curriculum/ac-version-9/downloads/curriculum-workbook.xlsx), retrieved 2026-09-29; workbook SHA-256 `db446882d2c00cf7c085a03e250e2442fda6c44011fc114680c46c1dc7a822c3`. Row numbers permit audit against the same snapshot.

| Official code | Workbook row | Level / area | Official content description | Taught slice and limit |
| --- | ---: | --- | --- | --- |
| AC9M7N01 | 17953 | Year 7 / Mathematics | describe the relationship between perfect square numbers and square roots, and use squares of numbers and square roots of perfect square numbers to solve problems | Day 19–20: selected perfect squares and positive principal roots checked by squaring; this does not teach every square-root problem. |
| AC9M7N02 | 17959 | Year 7 / Mathematics | represent natural numbers as products of powers of prime numbers using exponent notation | Days 16–20: factor trees, prime products and exponent notation, including a small shared-factor application; a first sequence, not general mastery. |
| AC9M7N04 | 17967 | Year 7 / Mathematics | find equivalent representations of rational numbers and represent rational numbers on a number line | Days 11,13,18: equivalent fraction names for operations and 90/150=3/5. The earlier fortnight taught number-line representation; these days revisit only a slice. |
| AC9M7N05 | 17972 | Year 7 / Mathematics | round decimals to a given accuracy appropriate to the context and use appropriate rounding and estimation to check the reasonableness of solutions | Days 12,14–15: nearest-whole rounding of decimal inputs and estimates/inverse checks; appropriate precision across wider contexts needs further work. |
| AC9M7N06 | 17976 | Year 7 / Mathematics | use the 4 operations with positive rational numbers including fractions, decimals and percentages to solve problems using efficient calculation strategies | Days 11–15: fraction addition/subtraction/multiplication, decimal addition/subtraction/grouping division and familiar percentages with efficient checks. Other rational cases remain for later weeks. |

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