2018×0.375-0.375×1962+3.75×4.4用脱式计算用简便方法?
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解原式=2018×0.375-0.375×1962+3.75×4.4
=0.375×(2018-1962)+3.75×4.4
=0.375×56+3.75×4.4
=3.75×(5.6+4.4)
=3.75×10
=37.5
=0.375×(2018-1962)+3.75×4.4
=0.375×56+3.75×4.4
=3.75×(5.6+4.4)
=3.75×10
=37.5
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