Painless Mental Math: Quick, Easy, and Useful Ways to Become a Human Calculator (Even if You Suck

Stop fearing math - tips and tricks to ditch the calculator and never make embarrassing errors again.

Mental math is not as hard as you think it is.... Su autoría corre a cargo de Hollins, Peter. La editorial del título es Pkcs Media, Incorporated. El libro tiene 196 páginas . Idioma: Inglés.