直接写得数．= = = = = == = = = = =
竖式计算． 1.2×3.15= 91.8÷0.24=验算 4.92÷2.3≈（精确到百分位）
列竖式计算．（1）42.3×0.78（保留2位小数） （2）15.36÷4.8（验算）
列竖式计算，带※的要验算，带△的保留两位小数． 3.05×2.4 ※6.24÷0.4 32×0.15 △16.65÷3.3．
用竖式计算．（最后一题得数保留两位小数）23.5×7.6 验算：15.75÷2.1 验算：8÷0.9．
口算 0.125×8= 5.39+4.61= 8.1÷0.09=3÷0.5= 4.5×0.02= 1﹣0.25=8.89﹣1.09= 1÷0.25= 0.2÷0.05=
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