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102x69的简便运算

100*56+2*56=5600+112=5712

102*36=(100+2)*36=100*36+2*36=3600+72=3672

102x56=100x56+2x56=5600+112=5712

(100+2)x36=100x36+36x2=3600+72=3672

原式=(100+2)x72=100x72+2x72=7200+144=7344望采纳

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最简单的就是:(102-2)x73.也就是100x73=7300

102x36=(100+2)x36=100x36+2x36=3600+72=3672 求采纳 谢谢

102*69=(100+2)*69=100*69+2*69=7083

(100+2)X36=100X36十36X2=360十72=432

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