262+38×12 12.18﹣（3.8+0.64）×+÷5 ÷[（﹣）×]．
= 1﹣=======
直接写出得数．============
======
直接写出得数．== 1﹣= 4﹣=====
计算下面各题．．
×
+
÷[（
﹣
）×
]．
= 1﹣
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= 1﹣
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