Dino Sums

Free maths practice for Classes 1 to 5

Short, untimed practice sessions with Sumi the dinosaur. When your child gets stuck, help shows each step - no ads, no account, nothing to pay.

FreeNo adsNo accountWorks in the browserAndroid app on Google Play
Sumi, the Dino Sums dinosaur mascot
Hi! I'm Sumi.

How it works

Every topic starts with a worked example that shows each step, then your child tries a few questions with help one tap away. Try it here - this is real practice from the app.

1. A worked example first

8 + 5, the make-ten way

  1. 1Start with 8. We need 2 more to fill a ten-frame.
  2. 2Split 5 into 2 and 3.
  3. 3Make ten: 8 + 2 = 10.
  4. 4Add what is left: 10 + 3.

8 counters2 moved from the 5

So 8 + 5 = 13.

2. Then your child tries

Question 1 of 3

Pick a class

Each class has its own topics, worked examples and practice pages. The app is a free preview of Classes 1-5 - it is not a full course or a test.

Class 1 Maths

Counting and zero, addition and subtraction within 20, making ten, tens and ones, comparing numbers.

See Class 1 topics ›

Class 2 Maths

Two-digit addition with carrying, subtraction with borrowing, skip counting, equal groups and sharing.

See Class 2 topics ›

Class 3 Maths

Numbers to 1000, three-digit addition and subtraction, times tables, halves and quarters, money stories.

See Class 3 topics ›

Times tables practice, 1 to 12 ›

Printable worksheets

Free PDFs that print on A4, one per topic. Every sheet ends with an answer key for grown-ups.

Join and add on - Class 1 additionPDF Skip counting - Class 2PDF Times tables 2 to 5 - Class 3PDF

15 worksheets across Classes 1-3, linked from each class page. More come as new topics land.

For parents

Built for short, calm practice - and for you to see how it is going.

See real progress

A parent summary shows each topic as Not tried, Practising or Steady, so you know what to sit with next.

No ads, no account, no chat

Nothing to sign up for, nothing to buy, no one to talk to. Your child's practice stays on the device.

Help that teaches

Hints show one step at a time and stop before the answer, so your child still does the thinking.

Honest about what it is

A free practice preview for Classes 1-5. It is not a full course and not a test.

Ready when you are

Open Dino Sums in the browser and set up your learner in under a minute.

Open Dino Sums - free

Works in the browser. Get the Android app on Google Play