口算---小数乘法

1.5×100=3.5×60=7.4×1000=3×0.5＝0.7×4＝2.1×3＝5.2×4＝1.1×8＝9×0.8＝1.5×2＝0.2×5＝0.7×0.8＝2.5×0.4＝2.3×0.3＝0.05