脱式计算，能简算的要简算
9.81×0.1+0.5×98.1+0.049×981 2
÷[（2
﹣1.2）×
+0.05]
100﹣32×0.125×0.25 [1﹣（
﹣
）]×
．
脱式计算，能简算的要简算
9.81×0.1+0.5×98.1+0.049×981 2÷[（2﹣1.2）×+0.05]
100﹣32×0.125×0.25 [1﹣（﹣）]×．
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