计算：46-412+38．-数学

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• 计算：12-3的结果是（）A．3B．3C．33D．9-数学
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• 计算：412-8=______．-数学
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• 的值是（）A．2B．±2C．－2D．0-九年级数学
• 下列计算正确的是（）A．3+3=6B．16+9=4+3=7C．45-35=5D．2+2=22-数学
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• 计算：|-22|-12-8+313-数学
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• 下列计算：①8-3=8-3；②4+9=4+9；③32-2=22．其中正确的有（）A．0个B．1个C．2个D．3个-数学
• (213)2+(-213)2的值是（）A．0B．423C．23D．以上都不对-数学
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• 计算：312-313+48．-数学
• 125+45-515-数学
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