直接写得数．
2.5×4= 0.25×3= 2.8×0.2= 2.4÷0.3= 4.6÷0.2=
0.32÷0.08= 7.2÷0.6= 0.06×15= 0.25×4×0.4= 7×2.6+7×0.4=
竖式计算，得数保留两位小数．
0.38×0.65 6.18×0.99 4.8÷2.3 23.5÷0.18．
列竖式计算，除法保留两位小数．
9.75×1.5 1÷6 13÷2.4 0.59×0.27．
用竖式计算．
3.49+2.15 7.4﹣3.68 5.3×0.26 0.453÷0.15．
直接写出得数．
3.8÷0.19= 0.73×1.25×0.8= 1.6×2.5= 0.15×15﹣5×0.15=
1÷0.2= 1.8×3.6+6.4×1.8= 2.5×0.3= 1.25×3.2×0.25=