Written by two of the world’s foremost authorities on mental calculation, The Mental Calculator’s Handbook is essential reading for aspiring calculating prodigies. From multiplying fractions to extracting square roots, all the techniques are presented and explained in a clear and rigorous way.
- Publication Date
- Mar 18, 2013
- All Rights Reserved - Standard Copyright License
- By (author): Robert Fountain, By (author): Jan van Koningsveld
- Interior Color
- Black & White
- US Trade (6 x 9 in / 152 x 229 mm)