题目内容
若的相反数是3,5,则的值为_________.
2或-8
解析
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测得某乒乓球厂生产的五个乒乓球的质量误差(g)如下表.检验时,通常把比标准质量大的克数记为正,比标准质量小的克数记为负.请你选出最接近标准质量的球是 号.
号码 &nbs, | 1 &nbs, | 2 &nbs, | 3 &nbs, | 4 &nbs, | 5 &nbs, |
误差(g) &nbs, | &nbs, | 0.1 &nbs, | &nbs, | &nbs, | 0.2 &nbs, |