Make maths easy with this fun guide to doing calculations fast The newly revised second edition of Speed Maths for Kids is your genius-level guide to performing lightning-fast maths calculations on the fly, without a phone, calculator, or other help. You???ll learn to multiply and divide large numbers in your head and neat tricks to make addition and subtraction simple and easy. You???ll also discover strategies for understanding fractions and decimals and learn to quickly check your answers every time you do a super-fast calculation. Speed Maths for Kids is a fun and foolproof way to do maths quickly and correctly, every time.