Clear, concise compendium of about 150 time-saving math short-cuts features faster, easier ways to add, subtract, multiply, and divide. Each problem includes an explanation of the method, a step-by-step solution, the short-cut solution, and proof, as well as an explanation of why it works. No special math ability needed.

Под заказ:
	OZON.ru - 338 руб.	Перейти

Рейтинг книги: 4 из 5, 5 голос(-ов).