Crammed with clever tips, tricks and techniques, this book makes mental arithmetic a breeze.With lots of practice puzzles and questions - just lift the flaps to reveal the answers.At the end, you can put your newly-learned skills to the test with a maths maze game.A fun way for 5-8 year olds to learn and practise essential maths skills.Supports primary maths teaching and Singapore maths. Chapters in this book include:- What is mental maths?- Number bonds- Fact families- Times tables- Rounding and estimating- Partitioning- Bridging- Checking your answers- Fun house