16.4+3.6×0.12的简便算法?
3个回答
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原式=16.4+3.6x0.12
=16.4+3.6x(0.1+0.02)
=16.4+3.6x0.1+3.6x0.02
=16.4+0.36+3.6x0.02
=16.76+0.072
=16.76+0.04+0.032
=16.8+0.032
=16.832
=16.4+3.6x(0.1+0.02)
=16.4+3.6x0.1+3.6x0.02
=16.4+0.36+3.6x0.02
=16.76+0.072
=16.76+0.04+0.032
=16.8+0.032
=16.832
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16.4+3.6×0.12
=16.4+3.6×0.3×0.4
=16.4+1.08×0.4
=16.4+0.432
=16.832
=16.4+3.6×0.3×0.4
=16.4+1.08×0.4
=16.4+0.432
=16.832
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解:原式=4(4.1+0.9x0.12)
=4(4.1+0.108)
=4(4.208)
=16.832
=4(4.1+0.108)
=4(4.208)
=16.832
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