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0.25×40.4+0.125×10.8的简便运算
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2016-09-26 · 知道合伙人教育行家
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=0.25x(40+0.4)+0.125x(10+0.8)
=0.25x40+0.25x0.4+0.125x10+0.125x0.8
=10+0.1+1.25+0.1
=10.1+1.35
=11.45
=0.25x40+0.25x0.4+0.125x10+0.125x0.8
=10+0.1+1.25+0.1
=10.1+1.35
=11.45
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