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3.7×19+81×3.7的简便运算
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您好!亲,这道题我们可以用乘法分配律进行简便运算,3.7×19+81×3.7=3.7×(19+81)=3.7×100=370
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咨询记录 · 回答于2022-10-18
3.7×19+81×3.7的简便运算
您好!亲,这道题我们可以用乘法分配律进行简便运算,3.7×19+81×3.7=3.7×(19+81)=3.7×100=370
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16.3-(16.3-3)简便运算
这道题我们可以用减法的性质去括号,就是,16.3-(16.3-3)=16.3-16.3+3=0+3=3
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