怎样简便就怎样算．①﹣0.375+﹣ ②12.5×0.32×25 ③÷6+× ④×0.25+×．
计算：12345×2345+2469×38275= ．
10﹣1.2+5﹣3.4+3﹣5.6+2﹣7.8= ．
1997×0.71+11×+2222×0.29= ．
计算15.38﹣3.99+6.72﹣9.01= ．
13+86×0.25+0.625×86+86×0.125= ．
﹣0.375+
﹣
②12.5×0.32×25 ③
÷6+
×
④
×0.25+
×
+2222×0.29= ．
+86
×0.25+0.625×86
+86
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