Choose Your Level
Select an age level that suits your ability. Begin with simpler subtractions or challenge yourself with trickier calculations.
Choose your age level using the menu above, press Start and put your subtraction skills to the test. Can you spot the incorrect sums?
Select an age level that suits your ability. Begin with simpler subtractions or challenge yourself with trickier calculations.
You'll see four subtraction sums. Three are correct and one is wrong. Can you find the incorrect calculation?
Earn points for correct answers, build a winning streak and aim for the top of the leaderboard.
Three subtraction calculations are correct. One contains a mistake. Choose the sum that is wrong.
The more answers you get right in a row, the more points you earn!
Your first correct answer earns 1 point, your second earns 2 points, your third earns 3 points – and so on, up to a maximum of 10 points per correct answer.
Keep your streak going to earn 10 points per answer!
Your next correct answer earns 1 point again. Then you can start building another streak.
Don't worry – you keep all the points you've already earned!
Subtraction is a skill you'll use every day, from calculating change when shopping to working out distances, differences and how much you have left.
There's no time pressure in this game, so take your time and think carefully. With regular practice, you'll become quicker and more confident at recognising correct and incorrect calculations.
Each age level has its own weekly leaderboard, and there's also an all-ages leaderboard shown above. Keep practising and see how high you can climb!
Enjoyed practising your subtraction? Try one of our other games and give your brain another workout!