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Lädt ... Becoming a Mental Math Wizardvon Jerry Lucas
   Keine Keine aktuelle Diskussion zu diesem Buch.  bread2u | Jul 1, 2020 |  keine Rezensionen | Rezension hinzufügen
An effort to make math fun through doing and performing rather than studying and pondering. Keine Bibliotheksbeschreibungen gefunden. |
Aktuelle DiskussionenKeineBeliebte Umschlagbilder
 Google Books — Lädt ...GenresMelvil Decimal System (DDC)372.7Social sciences Education Primary education (Elementary education) MathematicsKlassifikation der Library of Congress [LCC] (USA)BewertungDurchschnitt: (4.5)
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1
For example: "You can square any number"
(N 1)^2 = N^2 2N 1
(N-1)^2 = N^2 - 2N 1
(N 2)^2 = N^2 4N 4
(N-2)^2 = N^2 - 4N 4
(A B)(A-B) = A^2 - B^2
Alas, last I knew it was out of print. Therefore, I bought up several used copies while it was still around.
I know nothing about them, but on page 187 the book [b:The Working Memory Advantage: Train Your Brain to Function Stronger, Smarter, Faster|16130370|The Working Memory Advantage Train Your Brain to Function Stronger, Smarter, Faster|Tracy Alloway|https://d202m5krfqbpi5.cloudfront.net/books/1369085916s/16130370.jpg|21955428] recommends [b:Rapid Math Tricks & Tips: 30 Days to Number Power|2902376|Rapid Math Tricks & Tips 30 Days to Number Power|Edward H. Julius|https://d202m5krfqbpi5.cloudfront.net/books/1348377745s/2902376.jpg|2929515] and [b:Mind Games: Amazing Mental Arithmetic Tricks Made Easy|13184535|Mind Games Amazing Mental Arithmetic Tricks Made Easy|George Lane|https://d202m5krfqbpi5.cloudfront.net/books/1354207967s/13184535.jpg|18365123]. (