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题目:计算 19961997×19971996-19961996×19971997(1997年小学数学奥林匹克竞赛试题)由于算式中的数据比较大,不少参赛学生知道此题不宜按常规方法“硬算”,但又找不到简便算法,于是便凭着平时的解题印象,盲目地填上错误的答案0或1(题目只要求填得数)。细心观察比较后可以发现,19961997与19961996、19971996与19971997都相差1,根据这一特点,我们可先将题中的有关数据进行拆分,再运用乘法分
Title: Calculation 19961997 × 19971996 - 19961996 × 19971997 (1997 Primary Mathematical Olympiad exam) As the data in the formula is relatively large, many participating students know that this question should not be “hard calculated” by the conventional method, but can not find the simple algorithm , So they usually use the impression of solving problems, blindly fill in the wrong answer 0 or 1 (the subject only requires filling). Careful observation and comparison can be found, 19961997 and 19961997,19971996 and 19971997 are a difference of 1, according to this feature, we can first question the data to be split, and then use the multiplication points