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