13问答网 > 18×31+68×31+18的简便方法是怎么样算？

18×31+68×31+18的简便方法是怎么样算？

2025-03-16 19:23:52
推荐回答（1个）
回答1：

脱式计算18×31+68×31+18
解题思路：四则运算规则（按顺序计算、先算乘除后算加减，有括号先算括号，有乘方先算乘方）即脱式运算（递等式计算）需在该原则前提下进行
解题过程：

18×31+68×31+18

=（18+68）×31+18

=86×31+18

=2666+18

=2684

存疑请追问，满意请采纳

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