The below review goes for any edition of the book; be it paperback, hardback, new, old, in any language whatsoever.
I, however, first studied the books' danish paperback edition, published 1950'ish ::
Starting out; you really only need to know how to count one-tru-eleven.
The book sets out by presenting to you an entirely new way to 'think' multiplication: You'll learn to 'read' each individual cipher - stop memorizing of multiplication tables - . Completely mastered in about one lazy afternoon.
Soon, you will be reading and handling numbers as well as ciphers in much the same way you now read books. It's such a joy - both rewarding and addictive - ; provided only your undivided attention and wholeheartedly commitment !
Your memory will work and expand quickly; you'll find yourself dividing, multiplying and adding just for the fun of it - without any support of tools like pen & paper etc., even for billions*billions or division into like a zillion decimals !
In about one month I worked through this book cover-to-cover, read every single page of every chapter, did every single exercise over.
*** This SYSTEM is guaranteed to WORK - anyone can learn it ***
Even for someone who is not intimidated by numbers: this is the only book, you'll ever need to become the wizard of every-day-basic maths.
Do not for any reason skip any chapter or pages or the entire philosophy WILL elude you !
With pen [indeed: PEN] and paper work your way attentively and meticously through every single exercise - especially the obvious ones !
PLEASE; Stay patient with each of the examples and repeat them over until you're completely mastering its unique technique.
About half-way through this book you'll probably find calculators much too slow AND in-accurate [too few digits displayed]; You'll always vision the complete solution in your head long before you've finished punching the calculator's keypad.
The division chapters seemed the most difficult ones to me [two entirely independent and very different systems]. One is fool-proof, one is tounge-in-cheek.; you'll need to work through both of them. The latter division system is by far the most difficult part of the entire book - PLEASE brace yourself to put the extra effort into mastering it - and then SELL your CALCULATORs !
Your conception and memory skills as well as self-confidence will be instantly and permanently boosted.
Excellent self-study guide for children, too !
It's indeed the very best self-study basic-maths teacher for anyone who shyes away from basic accounting - or just wants a-trick-or-two to improve their calculating-speed.
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