怎样简便就怎样算．
①4.7+7.69+5.3+2.31 ②2000÷125÷8
③57×101﹣57 ④125×32×25
⑤86.5﹣（14.3﹣7.75） ⑥89.67+0.08﹣70.67．
怎样简便就怎样算．
①4.7+7.69+5.3+2.31 ②2000÷125÷8
③57×101﹣57 ④125×32×25
⑤86.5﹣（14.3﹣7.75） ⑥89.67+0.08﹣70.67．
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