Short, untimed practice sessions with Sumi the dinosaur. When your child gets stuck, help shows each step - no ads, no account, nothing to pay.
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.
8 + 5, the make-ten way
8 counters2 moved from the 5
So 8 + 5 = 13.
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.
Counting and zero, addition and subtraction within 20, making ten, tens and ones, comparing numbers.
See Class 1 topics ›Two-digit addition with carrying, subtraction with borrowing, skip counting, equal groups and sharing.
See Class 2 topics ›Numbers to 1000, three-digit addition and subtraction, times tables, halves and quarters, money stories.
See Class 3 topics ›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 3PDF15 worksheets across Classes 1-3, linked from each class page. More come as new topics land.
Built for short, calm practice - and for you to see how it is going.
A parent summary shows each topic as Not tried, Practising or Steady, so you know what to sit with next.
Nothing to sign up for, nothing to buy, no one to talk to. Your child's practice stays on the device.
Hints show one step at a time and stop before the answer, so your child still does the thinking.
A free practice preview for Classes 1-5. It is not a full course and not a test.
Open Dino Sums in the browser and set up your learner in under a minute.
Open Dino Sums - freeWorks in the browser. Get the Android app on Google Play