4.05×0.99+4.25×0.01 怎么简便计算
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4.05x0.99+4.25x0.01
=4.05x0.99+(4.05+0.2)x0.01
=4.05x0.99+4.05x0.01+0.2x0.01
=4.05x(0.99+0.01)+0.002
=4.05x1+0.002
=4.05+0.002
=4.052
=4.05x0.99+(4.05+0.2)x0.01
=4.05x0.99+4.05x0.01+0.2x0.01
=4.05x(0.99+0.01)+0.002
=4.05x1+0.002
=4.05+0.002
=4.052
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原式=4.05×0.99+﹙4.05+0.2﹚×0.01
=4.05×0.99+4.05×0.01+0.2×0.01
=4.05×﹙0.99+0.01﹚+0.2×0.01
=4.05×1+0.2×0.01
=4.05+0.002
=4.052
=4.05×0.99+4.05×0.01+0.2×0.01
=4.05×﹙0.99+0.01﹚+0.2×0.01
=4.05×1+0.2×0.01
=4.05+0.002
=4.052
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