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1.625+2.625+3.625+...+79.625+80.625等于多少?要的是计算方法大神们帮帮忙
人气:297 ℃ 时间:2019-08-16 23:29:17
解答
(1 80)*40 0.625*80=3240 50=3290
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简便方法计算 1.625+2.625+3.625+······+79.625+80.625
1.625+2.625+3.625+...+79.625+80.625 用乘法分配律 怎么写
1.625+2.625+3.625+...79.625+80.625把每一个小数拆成整数部分和小数部分的和,然后把整数部分和小数部分
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