Practise Unit 9 (Mental calculation) of the Primary 2 maths book. The game makes fresh questions on the unit's lessons every time you play.
Lessons in this unit
- Adding and subtracting in your head
How to revise this unit with games
Start with Practice, which has no timer, until you earn three stars, then try the One-minute race to get faster. The questions change every time, so every round is fresh revision on the same lessons.