【2023-1-2-3-4-5-6-7-8-9-.-100用简便方法计算急%gt;_】
<p>问题:【2023-1-2-3-4-5-6-7-8-9-.-100用简便方法计算急%gt;_】<p>答案:↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">陈德荣的回答:<div class="content-b">网友采纳 7000-(1+2+3+4……+100) =7000-(1+100)x50 =7000-5050 =1950
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