Learning Map
MathematicsAddition & Subtractionusually ages 6–7

Adding and subtracting tens mentally

Add and subtract a two-digit number and tens mentally and using concrete/pictorial representations

How to tell they’ve got it

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

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Try this together

Can your child quickly work out '54 + 30' or '78 − 20' in their head — knowing that only the tens digit changes?

Where this sits on the map

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

Builds on
10 More or 10 Lessages 6–7Adding/subtracting tens builds on mentally finding 10 more or less
The two digits of a two-digit numberages 6–7Adding/subtracting tens requires place value understanding
Adding and subtracting tens mentallythis skill · ages 6–7
Unlocks
Adding two two-digit numbersages 6–7Adding two two-digit numbers requires ability to add tens to a two-digit number

solid = must come firstdashed = helps

Curriculum alignment

Candidate matches to official curriculum codes — machine-suggested, unreviewed (v0.1).

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

Australian Curriculum v9 candidate

AC9M2N04medium confidenceYear 2 · Number

add and subtract one- and two-digit numbers, representing problems using number sentences and solve using part-part-whole reasoning and a variety of calculation strategies

AC9M3A02medium confidenceYear 3 · Algebra

extend and apply knowledge of addition and subtraction facts to 20 to develop efficient mental strategies for computation with larger numbers without a calculator

AC9M3N03medium confidenceYear 3 · Number

add and subtract two- and three-digit numbers using place value to partition, rearrange and regroup numbers to assist in calculations without a calculator

NSW syllabus codes & stages only

MA2-AR-01medium confidenceMathematics K-10 · Stage 2
MAE-RWN-02low confidenceMathematics K-10 · Early Stage 1

Victorian Curriculum 2.0 codes & levels only

VC2M2N04medium confidenceMathematics · Level 2 · Number strand
VC2M3A02medium confidenceMathematics · Level 3 · Algebra strand
VC2M3N05low confidenceMathematics · Level 3 · 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

Adding Three Small Numbersages 6–7 Adding two two-digit numbersages 6–7 Adding within 100ages 6–7 Addition and subtraction strategiesages 6–7

All Addition & Subtraction skills →