题目内容

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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12.8÷4= 5.2÷13= 12.5÷5= 1.64÷41=
10÷20= 24÷15= 8.65×10= 0.35×0.6=
3.08×0.01= 4.95×1000= 6.9×0.1= 0.4×0.5=
2.4÷0.8= 10.8÷9= 9.6÷0.8= 0.108÷2=
4.95÷0.9= 9.65÷0.1= 0.325×100= 2.5×8=
0.56÷0.7= 0.125×4= 3.28×0.1= 3.9÷0.13=
7.2×0.1= 0.01×0.1= 0.25×0.4= 1.6÷0.8=
1÷2.5= 1.25×0.8= 3.2÷0.04= 0÷1.7=
0.22×102= 9.6÷0.8= 5×0.24= 4.5-0.05=
3.9÷0.13 16.5÷0.5= 5×0.12= 24×0.5=
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0.56÷0.8= 7.4-2.8= 0.18÷0.2= 0.16÷8=
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7.3×0.3= 9÷6= 3.6÷0.12= 7.8÷0.6=
2÷5= 4.5+5= 0.3÷0.6= 0.96÷0.2=
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0.61+0.39= 0.56÷28= 10÷20= 4.08÷0.4=
11-9.4= 0.8×0.11= 0.72+12.8= 5.6÷0.01=
2.3×100= 0.75×100= 0.108÷2= 10.8÷9=
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12÷0.5= 5.2×0.4= 12.2÷0.2= 5.6÷100=
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84÷0.21= 0.75÷0.25= 2.5×16= 0.108÷2=
1.75+32.5= 16-5.07= 5.2÷13= 1.64÷41=
1.02×0.2= 0.26×0.3= 8.4×0.02= 1.29×6=
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