How to Calculate Quickly
Full Course in Speed Arithmetic
Many useful procedures explained and taught: 2-column addition, left-to-right subtraction, direct multiplication by numbers greater than 12, mental division of large numbers, more. Also numerous helpful shortcuts. More than 8,000 problems, with solutions.
Specificaties
| ISBN/EAN | 9781607964209 |
| Auteur | Henry Sticker |
| Uitgever | Van Ditmar Boekenimport B.V. |
| Taal | Engels |
| Uitvoering | Paperback / gebrocheerd |
| Pagina's | 194 |
| Lengte | |
| Breedte |