把下面各组分数通分..
直接写得数:8.6+2.4= 0.35÷0.7= 0.5×0.2= 1.25×8= 0.36×100=1﹣0.09﹣0.9= 2.8+3.2= 0÷8×0.25= 12.3﹣2.3=
口算. 8.5+1.3= 15.7﹣0.4= 3.8×2= 2.6×0.2= 6.9÷3=1÷0.4= 42÷84= 4﹣0.17= 0.8×1.25= 7.3÷0.01=
直接写出得数 9﹣6.27= 3.6+1.94= 12.5×0.25×0.8×40= 10.2×6.7= 1.17÷9=30.6﹣6.49﹣3.51= 2.52÷1.8= 5.5×9.8= 6.28÷0.8÷5= 0.8×18.5=40.8÷0.34= 14.7×0.54+0.46×14.7= 3.25+0.07= 9.47﹣4.7= 4.8×1.4÷7=
用竖式计算,减法题要验算,除法题得数保留两位小数 ①4.05﹣1.96 ②0.65×0.48 ③16÷23.
直接写出得数.6.5+7.5= 2.9+0.47= 3﹣2.3= 5.3﹣0.8=5.6÷8= 2.4×0.6= 1.25×8= 1.2÷0.06=