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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=
分析:依据四则运算方法解答.
解答:
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.
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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