【计算（0.1+0.12+0.123+0.1234）×（0.-查字典问答网

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　　【计算（0.1+0.12+0.123+0.1234）×（0.12+0.123+0.1234+0.12345）-（0.1+0.12+0.123+0.1234+0.12345）×（0.12+0.123+0.1234）】

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　　（0.1+0.12+0.123+0.1234）×（0.12+0.123+0.1234+0.12345）-（0.1+0.12+0.123+0.1234+0.12345）×（0.12+0.123+0.1234）

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2020-10-0913:40

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郭玉辉

　　设（0.1+0.12+0.123+0.1234）=A，（0.12+0.123+0.1234）=B，则A-B=0.1，（0.1+0.12+0.123+0.1234）×（0.12+0.123+0.1234+0.12345）-（0.1+0.12+0.123+0.1234+0.12345）×（0.12+0.123+0.1234）=A×（B+0.12345）-（...

2020-10-09 13:42:27

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