Comments on: Abacus Subtraction

By: shady9304

shady9304 — Fri, 29 May 2009 17:48:09 +0000

Parece que es una …
Parece que es una herramienta milenaria que puede tener buena aplicación en el siglo 21 donde nuestros jovenes no saben ni las tablas de multiplicación.

carlos romero

By: ButSomethinGotToGive

ButSomethinGotToGive — Fri, 29 May 2009 17:48:09 +0000

different degree
different degree

By: lkooe

lkooe — Fri, 29 May 2009 17:48:09 +0000

I don,t no either …
I don,t no either my friend I do NOT no either you are not alone.

By: rothkoaintdead

rothkoaintdead — Fri, 29 May 2009 17:48:09 +0000

type the following …
type the following into a search engine:

soroban takashi kojima

his book is great gift to industrialised society. there are two or three links to ebook versions. schools are a good thing but 1000 bucks a month for math class is unnecessary.

By: ConquerOnlineLegend

ConquerOnlineLegend — Fri, 29 May 2009 17:48:09 +0000

i dont understand? …
i dont understand?
how do you Subtract the numbers?