Our growing reliance on electronic calculation has led to the marginalisation of basic arithmetic skills. This challenges the way numeracy is both taught and learned. "Consequently, " the author says, "you and your children will need better methods and faster strategies for calculating - unless, that is, you are happy to literally take the change you are given "

Existing arithmetic methods are broken down and then re-assembled as a set of rapid mental strategies. These methods increase understanding and close the speed gap between human and electronic calculation.

Be prepared...