一.递等式：2.5×1.6×0.251.01×9.88.88×12.5
<p>问题：一.递等式：2.5×1.6×0.251.01×9.88.88×12.5<p>答案：↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">孙培兴的回答：<div class="content-b">网友采纳 2.5×1.6×0.25 =(2.5x4)x(0.4x0.25) =10x0.1 =1 1.01×9.8 =(1+0.01)X9.8 =1x9.8+0.01x9.8 =9.8+0.098 =9.898 8.88×12.5 =1.11x(8x12.5) =1.11x100 =111
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