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最近《西安晚报》、《今晚报》等,刊发了一条消息,美国10岁女神童歌莉嘉发现乘数新法。无独有偶,河南省南阳市十五小学三年级四班9岁小学生秦伟则发现了除数新法,正好与歌莉嘉的乘数是5的新法相对应。 这个方法是:一个数除以5,凡被除数末尾是0的,将最末尾的0去掉,乘以2,即得到答案。如600÷5,你把被除数最末尾的那个0去掉,变为60,乘以2,得120,就是答案;凡被除数末尾不是0的,可视作0去掉,乘以2,再加上末尾那个数除以5所得商,就是答案。如1225÷5,你可把被除数尾数5视作0去掉,得122,122×2=
Recently, “Xi’an Evening News”, “Tonight News” and so on, published a message that the United States 10-year-old goddess Legends Ricardo found the new law multiplier. Coincidentally, Nanyang City, Henan Province, fifteen primary school third grade four classes of 9-year-old primary school student Qin Wei found a new divisor law, just with the song Li Jia’s multiplier is 5 corresponding to the new law. This method is: a number divided by 5, where the end of the dividend is 0, the last 0 removed, multiplied by 2, that is the answer. Such as 600 ÷ 5, you remove the last 0 of the dividend to 60, multiply it by 2 to get 120, which is the answer; where the end of the dividend is not 0, it can be treated as 0, multiplied by 2, followed by the end That number divided by 5 income business, is the answer. Such as 1225 ÷ 5, you can divide the mantissa 5 as 0 removed, 122,122 × 2 =