Year 3 Maths: What Your Child Should Know

Published 2026-03-02

Year 3 is the start of Key Stage 2, and the maths steps up. If you're wondering what your child should be able to do — and where they might wobble — here's a clear parent's guide.

What Year 3 Maths Covers

The big themes in Year 3 include: place value up to 1,000, adding and subtracting with three-digit numbers, the 3, 4 and 8 times tables (building on the 2, 5 and 10 from Year 2), an introduction to fractions, telling the time to the minute, and basic measurement of length, mass and volume.

The Big Step Up from Year 2

KS2 maths becomes more abstract and multi-step. Children move from concrete counting to working with larger numbers and holding several steps in their head. This jump catches some children out — it's not that they've fallen behind, it's that the demands have risen.

Common Sticking Points

Times tables

The 3, 4 and 8 tables are the year's backbone and underpin everything ahead — including the Year 4 check. Keeping times tables practice going is the single most valuable thing you can do. Our times tables guide has practical methods.

Fractions

The first real encounter with fractions can be confusing. Concrete examples — halves and quarters of real objects and food — make it click.

Word problems

Multi-step problems demand reading and reasoning together. Strong reading helps here as much as strong maths.

How to Support Year 3 Maths at Home

Short, regular practice keeps skills sharp without pressure. Real-life maths — money, cooking, time — makes it concrete and meaningful. And if your child finds maths a struggle, our guide on helping a child who hates maths can help rebuild confidence. Rewarding effort keeps them engaged through the harder KS2 demands.

Don't Panic About the Jump

Almost every child finds the Year 2 to Year 3 step challenging at first. With steady support and regular light practice, they settle. Focus on secure times tables and number confidence, and the rest follows.

Turn practice into pocket money

The Pocket Money Game covers spelling, times tables and reading across the KS1 and KS2 curriculum — and your child earns real pocket money for every correct answer.

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Frequently Asked Questions

What maths should a Year 3 child know?

Year 3 covers place value to 1,000, adding and subtracting three-digit numbers, the 3, 4 and 8 times tables, an introduction to fractions, telling time to the minute, and basic measurement.

Why does maths get harder in Year 3?

Year 3 begins Key Stage 2, where maths becomes more abstract and multi-step. Children work with larger numbers and hold several steps in mind at once, which is a real jump from Year 2.

How can I help my Year 3 child with maths?

Keep times tables practice going regularly, use real-life maths like money and cooking, and reward effort to keep them engaged. Short, frequent practice works best.