3.2×0.45+0.32×4.2+0.032×13怎么简便计算?
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3.2×0.45+0.32×4.2+0.032×13
=3.2×0.45+3.2×0.42+3.2×0.13
=3.2×(0.45+0.42+0.13)
=3.2x1
=3.2
=3.2×0.45+3.2×0.42+3.2×0.13
=3.2×(0.45+0.42+0.13)
=3.2x1
=3.2
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展开全部
3.2×0.45+0.32×4.2+0.032×13
=3.2×0.45+3.2×0.42+3.2×0.13
=3.2×(0.45+0.42+0.13)
=3.2
=3.2×0.45+3.2×0.42+3.2×0.13
=3.2×(0.45+0.42+0.13)
=3.2
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