直接写出得数.642÷6= 0.9×99+0.9= 1.25×80= 2.5÷0.01=÷= 2﹣﹣= 3﹣﹣= (÷)×30=
3.65×4.36+6.64×3.65﹣3.65.
计算下面各题,能简算的要简算:(+)×12+×0.75+× (+40%)×﹣ 69.4﹣5.185÷1.7﹣13.9×0.5.
用你喜欢的方法做:50.4×2.7+24.48÷24 (+)×15×17 19÷[(+)÷].
递等式计算12.04﹣5.37﹣4.63 [6.85﹣(0.75+0.2)]÷0.5 0.125×0.25×329597×96 34÷[(35﹣14)×37].