How can you tell they’ve got it: Decimal place value (age 11+)?

If they’ve got it, you’ll see things like: Round numbers to a given number of decimal places; Round numbers to a given number of significant figures; Choose an appropriate degree of accuracy for a given context. Or just try it together: Can your child round a measurement like 12.3746 km to 2 decimal places (12.37 km) or 3 significant figures (12.4 km) — and explain when each level of precision is appropriate?

Mathematics Number Representation & Place Value Ages 11–13

Decimal place value (age 11+)

Your child can round a measurement like 12.3746 km to two places (12.37 km). They can also choose how precise an answer needs to be.

In curriculum terms

Round numbers and measures to an appropriate degree of accuracy including to a specified number of decimal places or significant figures

Ages are typical, not deadlines — follow your child’s pace. How to help at home →

How to tell they’ve got it

Tick these off as you see them — no test required.

Round numbers to a given number of decimal places
Round numbers to a given number of significant figures
Choose an appropriate degree of accuracy for a given context

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Try this together

Can your child round a measurement like 12.3746 km to 2 decimal places (12.37 km) or 3 significant figures (12.4 km) — and explain when each level of precision is appropriate?

Where this sits on the map

Stuck here? Check the skills it builds on first. Confident? Here’s what it unlocks.

Builds on

Decimal place valueages 10–11Rounding to dp/sf extends Y6 rounding to any place

Decimal place value (age 11+)this skill · ages 11–13

Unlocks

Estimating by roundingages 12–14Error intervals require understanding rounding to specified accuracy

solid = must come firstdashed = helps

Curriculum alignment

Where this fits in the official school curriculum — our best automated guess, not yet checked by a person.

Show candidate curriculum codes · 3 ACARA · 2 NSW · 3 VIC

Australian Curriculum v9 candidate

AC9M6N04high confidenceYear 6 · Number

apply knowledge of place value to add and subtract decimals, using digital tools where appropriate; use estimation and rounding to check the reasonableness of answers

AC9M6N06high confidenceYear 6 · Number

multiply and divide decimals by multiples of powers of 10 without a calculator, applying knowledge of place value and proficiency with multiplication facts; using estimation and rounding to check the reasonableness of answers

AC9M5N01medium confidenceYear 5 · Number

interpret, compare and order numbers with more than 2 decimal places, including numbers greater than one, using place value understanding; represent these on a number line

NSW syllabus codes & stages only

MA3-RN-02medium confidenceMathematics K-10 · Stage 3

MA3-RN-01low confidenceMathematics K-10 · Stage 3

Victorian Curriculum 2.0 codes & levels only

VC2M6N04medium confidenceMathematics · Level 6 · Number strand

VC2M6N06medium confidenceMathematics · Level 6 · Number strand

VC2M5N01medium confidenceMathematics · Level 5 · Number strand

These are candidate alignments generated by semantic matching — machine-suggested and unreviewed (v0.1), not official or verified mappings. For official curriculum content see australiancurriculum.edu.au, curriculum.nsw.edu.au and f10.vcaa.vic.edu.au. Don’t rely on them for registration or compliance purposes.

Nearby on the map

Fractions on a number lineages 11–12 Fractions on a number lineages 11–12 Numbers on a number lineages 11–12 Square and cube numbersages 11–14

All Number Representation & Place Value skills →