31.4×0.32+3.14十16.8的简便运算方法怎么写
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31.4×0.32+3.14+16.8
=31.4×0.32+31.4×0.1+16.8
=31.4×（0.32+0.1）+16.8
=31.4×0.42+16.8
=13.188+16.8
=29.988
=31.4×0.32+31.4×0.1+16.8
=31.4×（0.32+0.1）+16.8
=31.4×0.42+16.8
=13.188+16.8
=29.988
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