直接写出得数= = = == = = 8×0.125=
直接写出得数．+=﹣=+=﹣= 1﹣=+=﹣=+=
直接写出得数．========
直接写出得数．============
计算．﹣++（+） 7﹣（﹣）．
直接写得数：+=﹣=﹣=﹣=+=﹣= 1﹣=+=﹣=+=+5= 5﹣=
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