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September 7, 2026 · Juliet Preena

Maths Milestones: What to Expect at Age 5-6

A clear, practical reference for what maths skills a typically developing 5 to 6 year old should be building, from place value beginnings to simple addition.

Ages five and six typically mark the transition from purely concrete quantity work into the beginning of written numbers and simple operations. Here's what's typically developing at this stage.

Written Numeral Recognition

By five or six, most children can reliably recognise and write numerals zero through ten, and are beginning to extend into the teens and beyond, though writing numerals cleanly and consistently often lags slightly behind recognising them.

Beginning Place Value

This is typically the window where the golden bead material, or an equivalent concrete place-value tool, is introduced, building the earliest understanding that position, not just digit, determines a number's value. Full mastery of place value into the hundreds usually extends into age seven or eight.

Simple Addition and Subtraction

Concrete addition and subtraction, combining or removing physical quantities and counting the result, typically develops solidly in this window, ahead of the more abstract, memorised-fact version that follows once concrete understanding is secure.

Skip Counting and Early Patterns

Counting by twos, fives and tens, and recognising and extending more complex patterns, typically develop here too, supported by materials like colour-coded bead chains.

Basic Measurement and Time Concepts

Comparing lengths directly ("longer," "shorter"), and beginning to understand basic time concepts (today, tomorrow, morning, afternoon) are typical developing skills in this window, though precise clock-reading usually comes slightly later.

When to Pay Closer Attention

Persistent difficulty connecting written numerals to their actual quantity, well past age six, or ongoing confusion between numbers that look visually similar but represent very different amounts, is worth monitoring closely alongside other early signs.

Conclusion

Age five to six bridges concrete quantity work into the beginning of written numbers, place value, and simple arithmetic. This transition, handled carefully with concrete materials still very much in use, is exactly the focus of the later stages of Montessori Beginnings and the start of Primary Maths.

Book a trial class if you'd like an assessment of where your own child currently stands.

Sources

Frequently Asked Questions

Should a 5-year-old be doing addition on paper?

Concrete addition, combining physical quantities and counting the result, is typical at this age. Written, abstract addition without materials usually develops a bit later, once the concrete understanding is genuinely secure.

My 6-year-old still confuses numbers like 51 and 15. Is that normal?

It's fairly common at this age and often resolves with continued concrete place-value practice. It's worth watching more closely if it persists significantly past age seven despite consistent teaching.

What's the best way to support this stage at home?

Everyday counting in groups of ten, using real coins or small objects, and simple, concrete addition and subtraction with physical items (combining or removing snacks, toys) directly reinforce what's being built at this stage.