Year 1 maths: what your child should know in Australia

Year 1 is the year tens and ones stop being a poster on the classroom wall and start becoming how children think about numbers. If Prep felt like counting games and fingers, Year 1 asks for numbers past 100, skip counting, and small money stories - without racing into Year 2 hundreds. This page is the Year 1 map for Australian parents.

It sits between Prep maths and Year 2 maths. For the deeper "why tens matter" story, keep place value explained for parents open in another tab. For coin play that matches school language, see money maths at home.

A few things before the checklist

Year level and curriculum level are related, not identical. Level 1 content is typically taught in Year 1, but children progress at different rates across strands. Strong counting with still-building partitioning is common - and both facts matter more than a single label.

"By the end of Year 1" is a destination, not a weekly scorecard. Teachers work toward the Year 1 mathematics achievement standard across the whole year. Mid-year wobbles are normal.

Depth beats speed. Knowing why 34 is 3 tens and 4 ones beats racing worksheets toward Year 2. Early number sense underpins later maths success - see the Centre for Independent Studies briefing Early Numbers, Big Ideas. For the wider primary map, read Australian Curriculum maths levels explained.

What the curriculum expects by the end of Year 1

In parent language, by the end of Year 1 your child is working toward being able to:

• Connect number names, numerals and quantities, and order numbers to at least 120
• Partition one- and two-digit numbers in different ways, including into tens and ones
• Partition collections into equal groups and skip count in twos, fives or tens to quantify sets to at least 120
• Solve addition and subtraction problems with numbers to 20, using strategies (not only counting from one every time)
• Use mathematical modelling for practical problems involving addition, subtraction, equal sharing and grouping - including simple money transactions
• Create skip-counting and repeating patterns, and name the repeating unit
• Compare and order objects and events by length, mass, capacity and duration, and measure length with uniform informal units
• Make, compare and classify familiar shapes and objects; give and follow directions in a space
• Collect and record categorical data, make one-to-one displays, and talk about frequencies

That list is adapted from the Australian Curriculum Year 1 mathematics achievement standard. Official wording lives on the v9 Australian Curriculum site.

Numbers to 120 - and why "teen" vs "ty" matters

Year 1 stretches the number line well past Prep's "at least 20". Children read, write and order numbers using materials, number lines and charts. Confusions like 16/60 or 14/40 are expected - the words sound similar - and sorting them out is part of the learning, not a crisis.

At home: Peg numbered cards on a string; hunt house numbers on a walk; play "which is bigger?" with two two-digit cards. When a teen/ty mix-up appears, say the digits out loud ("one ten and six" vs "six tens") rather than only correcting the answer.

Tens and ones: the Year 1 cornerstone

If you only nurture one idea at home this year, make it partitioning into tens and ones.

Your child should be moving toward seeing 35 as 3 tens and 5 ones - and also as 2 tens and 15 ones when that helps. Part-part-whole facts to 10 (pairs that make 10) sit underneath almost every later calculation. A ten-frame is still gold under 20; for bigger numbers, bundle sticks, pasta or Lego into tens.

Kitchen table: Build 24 three ways (two tens + four; one ten + fourteen; twenty + four). Ask which version helps if you add six more. When tens wobble, the fuller story is in place value explained for parents.

Skip counting, equal groups and early "times" language

Year 1 is not times-tables year. It is the year of equal groups and skip counting in 2s, 5s and 10s to count larger collections efficiently - including stacks of coins. That language ("groups of", "rows of") quietly prepares for Year 2 arrays without flashcard pressure.

Kitchen table: Count a pile of socks in twos; stack $1 coins in tens; clap-skip-count to 50. Ask "how did you know you had finished?" so the strategy stays visible.

Adding and subtracting within 20

Children add and subtract within 20 using materials, drawings, counting on/back, partitioning, and part-part-whole knowledge to 10. The goal is flexible strategies - not timed tears over every combination.

Kitchen-friendly practice (about 10 minutes):

1. 1. Story maths. "We had 8 crackers. We ate 3. How many left?" Then "We need 12. How many more do we need?"
2. 2. Make ten. For 8 + 5, move 2 across to make 10, then add 3. Show it on a ten-frame.
3. 3. Fact family whisper. For 6, 4 and 10, say the two additions and two subtractions out loud - no worksheet required.

Money, sharing and everyday modelling

Year 1 explicitly includes simple money transactions (often whole-dollar play) and equal sharing/grouping problems. Role-play shops, birthday money stories, and "share the grapes equally" are curriculum, not extras. Pair home play with money maths at home so coin names and "does that change look sensible?" stay friendly.

At home: Set a $1/$2/$5 toy shop; share a packet of biscuits between two plates and check with counting or subitising; ask "how do you know it's fair?"

Patterns, measure, space and data

Skip-counting patterns and repeating patterns (stamp-stamp-clap) sit in algebra. Measurement stays mostly informal: compare length/mass/capacity/duration, then measure length with the same unit end-to-end (paperclips, blocks - no gaps). Time language expands to years, months, weeks, days and hours - sequencing events more than reading a clock face yet. Space work is classifying shapes and giving/following directions. Data means a simple question, a tally or pictograph, and "which category won?"

At home: Measure the table with handspans then with spoons and talk about why the counts differ; build a treasure-hunt path with left/right; survey favourite fruit and stick one sticker per vote.

What "doing fine" looks like - and when to dig deeper

An end-of-Year-1 child who is broadly on track can often order numbers past 100; explain the tens and ones in a number like 47; skip-count a collection in tens; work out 9 + 6 with a strategy they can describe; share 12 grapes onto 3 plates; and talk about a simple pictograph they helped make.

They may still count from one for some facts, mix teen and ty words, or need a ten-frame prompt. None of that alone means they are behind. If you see a pattern of stuck points - especially tens-and-ones or facts within 10 - use Is my child behind in maths? to separate signal from noise.

Bridging from Prep without rewriting last year

If Prep subitising or numbers to 20 still feel soft, keep a light five-minute routine running while Year 1 introduces tens - but do not freeze all new learning. Many children can explore "34 is three tens" even as they firm up facts to 10. Start from Prep maths if you need the Foundation checkpoint, then return here.

Looking ahead, Year 2 maths stretches toward 1,000 and early multiplication language. Year 1 does not need to pre-teach that under pressure.

How to help without homework wars

Keep sessions short (five to fifteen minutes), warm, and real. Ask "How did you know?" and "Can you show another way?"

Rotate three habits: talk numbers in daily life; play (dice, cards, shop, ten-frames) more than drill; focus one skill per week. A quick note to the teacher asking what to emphasise this term almost always helps. If maths becomes a nightly battle, pause formal practice and go back to games - confidence is part of learning. For children who already tense up, see maths anxiety in primary kids. For evening structure more broadly, homework without tears keeps the relationship first.

FAQ

Is Year 1 too early for times tables?

Yes for formal tables. Year 1 focuses on equal groups, sharing, and skip counting in 2s, 5s and 10s. Playful skip-counting is fine; high-pressure flashcard drills usually are not. Broader multiplication language grows in Year 2 and beyond.

My child can count past 100 but freezes on 8 + 7. Should I worry?

Counting and calculating differ. Practise part-part-whole to 10 and "make ten" strategies with a ten-frame before pushing speed. If freezing comes with avoidance or tears, treat the feelings as seriously as the skill.

Do they need the formal written methods we learned?

Not as the main Year 1 goal. Understanding, materials, and a variety of strategies come first. Ask the teacher which strategies the class uses so home and school language match.

What if my child is ahead?

Skip racing Year 2 worksheets. Offer richer Year 1 problems: multiple partitions of the same number, explaining thinking, real projects (party share, coin shop). Adaptive practice that meets them where they are is kinder than racing the calendar.

Does "Year 1" mean the same in every state?

Yes for curriculum year level. Foundation/Prep is the first year of school; Year 1 is the second. States implement the Australian Curriculum locally, but the Year 1 mathematics achievement standard above is the national reference.

A calm next step

Year 1 is a long runway from Prep counting into tens-and-ones thinking. If you want a low-pressure snapshot of number skills at home, Ziado's free check is a one-off, roughly 10-minute adaptive diagnostic with partial results only - no account and no card. The full placement unlocks after signup. It is not a school test and it is not the full product; Ziado's ongoing path is adaptive maths (Foundation–Year 6) plus phonics reading (Foundation–Year 4). Explore Ziado maths if you want practice that can meet number skills at the right step. Individual and Family plans, if you continue later, start with a 14-day free trial of the full app — see pricing for current plans.

If rearranging still changes their count, see spreading out counting explained.

If early counting still wobbles, check the three skills in three counting skills explained.

Subitising (seeing small amounts without counting one-by-one) is covered in subitising explained for parents.

Related: number bonds, make ten (bridging), bundling tens and ten more and ten less.

Odd and even (pairs vs leftover) is covered in odd and even explained for parents.

Comparing numbers (more/less/equal) is covered in comparing numbers explained for parents.