脱式计算，能简算的要简算22.3﹣2.45﹣5.3﹣4.55 [43.3×（2﹣75%）+7]× ， ．
直接写出得数．6×==102×O=（0.27+0.9）÷9=
直接写出得数．608÷4= 1﹣0.25= 0.8×0.125=1×= ﹣=
口算80﹣42= 18.2+8= 19﹣0.2= 1.8×0.4=24÷0.6= 21×= ﹣= 100×1%=1.25×8÷1.25×8= ×8+8×=
直接写得数．352+198=+=1.03+0.07=32÷1000=×=0.7：0.25=
直接写出得数．218+682= 0.3÷0.6= 7.8﹣3.6= 0.625×100=÷2= ﹣= ×= （﹣）×24=
[43.3×（2﹣75%）+7]×
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= 100×1%=
×8+8×
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