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2019-2020年七年级数学上学期期中教学质量检测答案
一、BCADDADBCA
二、
11.
12.答案不唯一
13.
14.
2515.
1.2a元
16.72(说明下列各题若有另外的解法,请参照给分)
三、17
①解原式=······························2分=·····································4分=··········································6分
②解原式=····························1分=·························2分=·································4分=···································6分
③解原式=·························2分=······································4分=········································6分18解原式=························2分=·······················4分=·····································6分
19.解=··············2分=····················4分=····································6分
20.解
(1)································2分
(2)·····5分答该厂星期一生产工艺品305个;本周实际生产工艺品的数量为2110个.·····················6分
21.解原式=···························1分=····························2分=··········································3分当··········································4分...。