數年前,香港一名十一歲男童,曾運用「史豐收速算法」,在18.8 秒的時間內算出 100 個個位數的總和,打破了一項保持了 22 年的「健力士世界紀錄」。 史豐收,數學界名人,經過多年的刻苦探索與實踐,在1970年代創立了一套全新的計算系統。神奇之處在於熟練掌握後,使用者能夠不用計算工具,不列計算程式,便可一口報出多位數算式的計算結果,可運用到加減乘除,甚至乘方、開方、對數等複雜的數學運算上。「史豐收速算法」打破了幾千年來四則運算從低位算起的傳統程序,首創從高位算起的運算規律。他更發明了29句口訣,及創造了指算加法,有助學生學習和應用。 本書是史豐收教授的專著,詳述了「史豐收速算法」的理論,包括口訣及指算加法,每章均備有案例分析,並附有大量鞏固練習。實踐證明,一般人經過一個多月的學習,即可掌握此速算法。
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