2.5÷[(17.2-4.5×3.6)÷0.04] 4.5÷0.25-0.75×1.2
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=
竖式计算(带*的要验算)48.35+156.78= *0.9﹣0.45=
直接写出得数3.1+5.6= 1.2+0.3= 102×3= 2.65+0.73=240÷16= 25×8= 2.12﹣0.9= 1+0.2=0.54﹣0.45= 3.25+1= 1.4﹣0.5= 1﹣0.25=