Australian Curriculum · Year 1

Year 1 Maths: What Should My Child Know?

By the Nousli team

Year 1 is where maths starts to look more like maths. The exploratory, concrete play of Foundation year gives way to something with more structure — two-digit numbers, formal addition and subtraction, analogue clocks. For some children this shift feels natural. For others it arrives faster than they're ready for. This guide covers what the Australian Curriculum expects at Year 1, translated into what you'd actually notice at home.

Year 1 maths: what the Australian Curriculum expects

The big conceptual leap in Year 1 is place value. Until now, numbers have mostly been about counting — one, two, three, four. In Year 1, children start to understand that 23 isn't just "twenty-three," it's two tens and three ones. That idea — that the position of a digit changes its value — underpins almost everything in primary maths from here on. How well a child grasps it in Year 1 shapes how Year 2, 3 and 4 will feel.

Here's what Year 1 covers across each strand:

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Number

Counting to at least 120 and skip counting by 2s, 5s and 10s from any starting point. Reading, writing and ordering two-digit numbers. Understanding two-digit numbers as tens and ones (place value). Adding and subtracting numbers within 20, using strategies like counting on, counting back, and using known facts. Introduction to multiplication through equal groups and skip counting (2s, 5s, 10s). Recognising halves of shapes and collections.

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Algebra (Patterns)

Continuing and creating number patterns. Identifying and describing the rule in a pattern. Writing simple number sentences using + and − with an equals sign. Finding the unknown in a number sentence — for example, working out what goes in the box in 3 + ☐ = 7.

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Measurement

Measuring and comparing lengths, masses and capacities using informal units (for example, "this shelf is 8 pencils long"). Telling time to the hour and half-hour on an analogue clock. Ordering months of the year and seasons. Identifying Australian coins and notes and solving simple money problems.

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Space (Geometry)

Recognising and classifying 2D shapes and 3D objects, including less common examples like oval, rhombus and rectangular prism. Using directional language to describe and follow pathways: left, right, forward, backward, turn. Describing the position of objects relative to each other and relative to a reference point.

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Statistics

Collecting data by asking questions and observing. Organising and recording results. Creating and reading picture graphs where each picture represents one object. Answering questions from the data — including comparisons between categories.

Source: Australian Curriculum v9.0 (ACARA), Mathematics — Year 1.

Why place value is the hinge skill of Year 1

Ask a Year 1 child what the "2" in 25 means, and many will say "two." The correct answer — "two tens, or twenty" — is what place value understanding looks like. It seems like a small distinction. It isn't.

A child who understands place value can jump to 35 by adding a ten to 25. They can work out 47 − 10 without counting backwards one at a time. They can compare 63 and 36 and know immediately which is larger. A child working without that understanding uses counting as their only tool — which works at small numbers and becomes progressively less efficient as the numbers grow.

The test at home is to ask your child to build a number like 34 using tens and ones — ten blocks and single blocks, or just groupings of objects. Can they show you that 34 is three groups of ten and four singles? If the idea seems unfamiliar, it's worth spending some time on it. This is the single concept with the highest return in Year 1.

Is my child on track? Questions worth asking yourself

Year 1 maths covers a lot of ground. These questions focus on the areas that matter most — the ones that quietly predict how Year 2 will go:

When they skip count — 2, 4, 6, 8 — does it feel effortless, or do they need to work it out step by step?
Can they tell you what the "tens digit" and the "ones digit" mean in a two-digit number — or is place value language new to them?
When they solve 8 + 5, do they start at 8 and count up — or go back to counting from 1?
Can they read the time to the hour and half-hour on an analogue clock — or only a digital one?
If you split 8 grapes into two equal groups, can they connect that to the word "half" — and does it feel like understanding, or a borrowed word?
When they measure something with informal units — pencils, blocks — do they line them up end to end without gaps or overlaps?

The third question is the most diagnostic. "Counting on" — starting from the larger number and counting up — is a significant milestone. Children who still return to 1 for every addition problem are relying on a strategy that becomes impractical in Year 2.

What to look for at Year 1

Year 1 gaps are often harder to spot than they look. The child who breezes through counting might still be working without place value understanding. The one who seems slow with numbers might just need more time with the physical materials. These are the patterns most worth noticing:

What it looks like	What it usually signals
Can count to 100 but can't say what comes after 39 or 59 without hesitation	Rote counting without structure — the tens-pattern isn't yet internalised
Adds 7 + 6 by counting from 1 rather than starting from 7	"Counting on" strategy not yet developed — expected to consolidate through Year 1
Can identify that 47 has a 4 and a 7 but can't say what the 4 represents	Place value as a concept not yet secure — the most critical gap to address in Year 1
Skip counts by 2s from 2 but struggles to skip count from any other starting point	Pattern memorised but not understood — flexibility is what the curriculum is working towards
Reads the hour hand on an analogue clock but ignores the minute hand entirely	Clock reading developing — half-hour is the Year 1 target and worth practising at home
Measures a length but leaves gaps between the units or overlaps them	Measurement concept still forming — the principle of no gaps or overlaps is foundational for later work in cm and m

What Year 1 maths is building towards

Year 2 arrives with bigger numbers and higher expectations. Children will work with numbers to 1000, start using formal addition and subtraction strategies, and meet fractions beyond halves. All of that builds directly on what Year 1 establishes.

The two most predictive Year 1 skills for Year 2 success are place value understanding and addition fact fluency within 20. A child who truly understands that 34 means three tens and four ones can extend that thinking to hundreds. A child who knows that 8 + 6 is 14 without working it out can focus their mental energy on harder problems rather than basic computation.

Neither of these needs to be perfect by the end of Year 1. But they should be actively developing — and if they're not, Year 2 is a harder year than it needs to be.

Maths Learning Roadmap

This guide tells you what Year 1 maths looks like.
The Maths Learning Roadmap tells you where your child actually sits.

A 15-minute parent questionnaire mapped to the Australian Curriculum. You get a personalised strand-by-strand report — and one specific activity tailored to your child's biggest opportunity area.

Build your Year 1 Maths Roadmap · $19 AUD →

No app. No login. Works on your phone.

Frequently asked questions

Questions Year 1 parents ask most often:

My Year 1 child is still counting on fingers. Should I be concerned?

Not necessarily — finger use is still appropriate in early Year 1. The concern is if fingers remain the only strategy available by mid-to-late Year 1, particularly for small facts like 4 + 3. The goal through Year 1 is to build fluency with addition and subtraction facts within 20, so that the answer starts to feel known rather than calculated. If you're seeing very slow, effortful computation on small numbers in Term 3, that's worth raising with your child's teacher.

What does "skip counting" actually mean, and why does it matter?

Skip counting means counting in equal jumps — by 2s (2, 4, 6, 8...), by 5s (5, 10, 15, 20...) or by 10s (10, 20, 30...). It matters because it's the earliest experience of multiplication. A child who can skip count by 5s fluently has a head start on understanding "5 groups of 3" in Year 2 and 3. It also builds number sense — a child who skip counts by 10s develops an intuitive feel for how numbers grow.

My child's school uses a number line. What's the point of it?

A number line is a way of showing that numbers have position and distance — not just sequence. Jumping along a number line to add or subtract is a bridge between counting strategies and the mental computation strategies that come later. It also helps children visualise what "10 more" or "10 less" looks like. It's more powerful than it looks from the outside.

Is there anything I can do at home to support Year 1 maths without it feeling like homework?

The highest-value activity at this stage is conversation around number — not worksheets. Ask your child to count a collection of objects and tell you how many. Play simple card games that involve adding two numbers. Point out the time on a clock and ask what time it will be in half an hour. If they're stuck, work it out together rather than just telling them. The goal is thinking out loud, not getting answers right.

How do I know if my child's teacher is covering all of the Year 1 curriculum?

Australian schools follow their state's mathematics syllabus, which aligns with the national Australian Curriculum. Teachers have flexibility in how they sequence and teach content across the year. If you're curious about where your child is up to, the simplest approach is to speak directly with their teacher — they'll have a clear picture of what's been covered and where your child sits within the class. School reports also give a general overview, though they rarely go into strand-by-strand detail.