脱式计算:0.75×18÷0.15; 2.07÷0.23÷0.45; 1.36÷0....
脱式计算:0.75×18÷0.15;2.07÷0.23÷0.45;1.36÷0.8-12.9;7.28+3.2÷2.5....
脱式计算:0.75×18÷0.15; 2.07÷0.23÷0.45; 1.36÷0.8-12.9; 7.28+3.2÷2.5.
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