Lift-the-Flap Mental MathsFun essential maths skills practice for 5 8 year olds 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.