能简算的要简算①9﹣0.64﹣0.36②1.8×+2.2×25%③6.25﹣40÷16×2.5．
直接写得数==========
直接写得数=== 3÷8=========
直接写出得数． 93= 8.7﹣7=÷1= 21÷7= 7×÷7×= 44÷= 75÷10%= 0.9+99×0.9=
直接写出得数．
直接写出得数．÷=+=÷=×= 1÷0.25=÷1=÷3=﹣=
+2.2×25%
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= 75÷10%= 0.9+99×0.9=
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