61.4×3.95+3.85×39.5+0.395的简便运算方法?
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61.4×3.95+3.85×39.5+0.395=61.4×3.95+38.5×3.95+0.1×3.95=(61.4+38.5+0.1)×3.95=100×3.95=395
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61.4×3.95+3.85×39.5+0.395
=614×0.395+385×0.395+0.395
=0.395×(614+385+1)
=0.395×1000
=395
=614×0.395+385×0.395+0.395
=0.395×(614+385+1)
=0.395×1000
=395
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61.4×3.95+3.85×39.5+0.395
=61.4×3.95+38.5×0.1×39.5+3.95×0.1
=61.4×3.95+38.5×3.95+3.95×0.1
=(61.4-38.5+0.1)×3.95
=100×3.95
=395
=61.4×3.95+38.5×0.1×39.5+3.95×0.1
=61.4×3.95+38.5×3.95+3.95×0.1
=(61.4-38.5+0.1)×3.95
=100×3.95
=395
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原式=61.4x3.95+3.85x10x3.95+3.95x0.1
=3.95x(61.4+38.5+0.1)
=3.95x100
=395
=3.95x(61.4+38.5+0.1)
=3.95x100
=395
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