40.5÷0.81+0.875×36简便计算
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40.5÷0.81+0.875×36
=(40.5x2÷0.81)/2+0.875×36
=(81÷0.81)/2+0.875×36
=50+0.875x36
=50+0.875x4x9
=50+3.5X9
=50+31.5
=81.5
=(40.5x2÷0.81)/2+0.875×36
=(81÷0.81)/2+0.875×36
=50+0.875x36
=50+0.875x4x9
=50+3.5X9
=50+31.5
=81.5
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