题目内容
口算
0.2×0.2÷0.1=
0.3×5÷0.15=
2.5×4÷0.5=
0.28+4.52=
25×3.6×4=
0.45÷0.9×2=
0.2×0.2÷0.1=
0.3×5÷0.15=
2.5×4÷0.5=
0.28+4.52=
25×3.6×4=
0.45÷0.9×2=
0.2×0.2÷0.1=0.4;
0.3×5÷0.15=1;
2.5×4÷0.5=20;
0.28+4.52=4.8;
25×3.6×4=360;
0.45÷0.9×2=1.
0.3×5÷0.15=1;
2.5×4÷0.5=20;
0.28+4.52=4.8;
25×3.6×4=360;
0.45÷0.9×2=1.
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