如题所述
=0.25+0.75+22.32= 1+22.32= 23.32
= 6.9-6.9 +0.1+0.1=0.2
=150-(24.38+75.62)=150-100=50
=4.56+0.44+0.056=5+0.056=5.056
你所做的正确
=1.11+0.89+2.22+7.78=2+10=12
不清楚
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怎么做