计算下列各题,能简算的要简算。25×1.25×32(3.75+4.1+2.35)×9.8.
竖式计算并验算.①39.8+14.72 ②50.4﹣19.64.
直接写出得数 0.3+0.47= 10﹣4.7= 0.33+0.3= 20.2﹣10.2= 7.6+0.4=3.9﹣0.6= 50.23+0.77= 48.51﹣4.09= 2.02+3.8= 8.4﹣4.8=
列竖式计算.27.39+8.51=6.78+17.5=30.4﹣8.75=10.03﹣8.97=
笔算下面各题.12.6﹣4.8= 38×24= 605÷5= 17×17= 215÷3= 0.8+0.6=
①5.3+25.7= ②2.67﹣0.33= ③2.58﹣1.85=