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3÷4=0.9÷3=1.5÷0.5=10×0.28=
20÷0.4=1.2÷0.6=0.83+0.25=1-0.08=
5χ-χ=X+X=8×12.5=0.6×1.5=
2.7+2.7=63÷0.9=0.3÷1.5=10÷0.2=
0.95÷5=0×1.7=6÷5=1.8÷0.36=

解:3÷4=0.75;0.9÷3=0.3;1.5÷0.5=3;10×0.28=2.8;
20÷0.4=50;1.2÷0.6=2;0.83+0.25=1.08;1-0.08=0.92;
5χ-χ=4x;X+X=2x;8×12.5=100;0.6×1.5=0.9;
2.7+2.7=5.4;63÷0.9=70;0.3÷1.5=0.2;10÷0.2=50;
0.95÷5=0.19;0×1.7=0;6÷5=1.2;1.8÷0.36=5.
故答案依次为:0.75,0.3,3,2.8,50,2,1.08,0.92,4x,2x,100,0.9,5.4,70,0.2,50,0.19,0,1.2,5.
分析:依据四则运算方法解答.
点评:本题主要考查学生对于四则运算方法的掌握.
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