计算，能简算的要简算×÷ ×24+ （﹣+）÷（5﹣×）÷ ﹣（+）﹣ 20﹣÷×．
直接写得数．×=×3= 0÷=÷=×=×39=×=÷=÷=÷3=
直接写数对又快！==========
直接写出得数 10﹣0.1=+= 1÷= 14﹣﹣=×=﹣=×=（+）×72=
直接写出得数．×= 1÷0.9=÷0.8=×9÷×9= 5.6÷=×= 0÷=×=
直接写得数．×=÷14= 26×=÷28= 12×=×=×=×24=÷=÷=
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