直接写出得数．8.5×0.01= 6.3÷0.09= 0.75x+1.25x= 7.05×9+7.05=1.52= 0.21×0.3= 3.5×2÷3.5×2= 4÷1.25=
直接写得数．﹣=﹣=+= 1﹣=﹣=﹣=+=﹣=
计算下列各题．==．
直接写出得数．== 1﹣ 2.4+===
直接写出得数． 4x+6x= 10﹣﹣= 1﹣=﹣=+=+=﹣= x+3x+7x=+= 1﹣﹣=﹣=+=
计算下面各题，能简便的要简便．++++ 4﹣﹣ 78﹣8.5+22﹣0.5﹣（+）﹣++．
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