求图形阴影部分的面积
= = = == = = == = = =
直接写出得数.+0.2= +﹣0.2= 5÷= ×1.5+3=3.6×= ×1.5= ﹣= 1﹣137.5%=
直接写得数﹣= ÷9= 1﹣= ×=÷= ÷= += ×=+= ÷= ﹣= ×=
直接写出得数.+= ﹣= ×2= ×=×= ÷4= ÷= 12×=÷42= ×= ×14= ÷4=
口算78﹣0.8= 18×40= 910÷70= 1÷= ﹣=3﹣= 3.48+6.52= ×= ÷= 0.8﹣=