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数学
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(8+4)×25×125有简便算法吗?
人气:451 ℃ 时间:2019-10-06 23:20:19
解答
(8+4)×25×125
(8×25+4×25)×125
(200+100)x125=3750012×25×125=(4×25)×(3×125)=100×375=37500
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