怎么简便就怎么计算．①（×+）× ②÷4+×25% ③（2.4﹣）÷0.625+ ④2.5×12.5×48．
直接写出得数．+= += ++= ﹣（﹣）=3﹣= ﹣= （﹣）×0= 5﹣﹣3=
用你喜欢的方法计算．+﹣ +﹣ 5﹣﹣．
怎样简便怎样算．++=+++=﹣（+）=
．
﹣= += += ﹣=﹣= ﹣= += ﹣=1﹣﹣= +=
×
+
）×
②
÷4+
×25% ③（2.4﹣
）÷0.625+
④2.5×12.5×48．
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