试题与答案

某食品厂从生产的袋装食品中抽出样品20袋,以每袋标准质量450克为标准,检测每袋

题型:解答题

题目:

某食品厂从生产的袋装食品中抽出样品20袋,以每袋标准质量450克为标准,检测每袋的质量是否符合该标准,超过或不足的克数分别用正、负数来表示,记录如下:
与标准质量的差值(单位:克)-6-3-1025
袋数145631
回答下列问题:
(1)这20袋样品中,符合每袋标准质量450克的有______袋;
(2)这批样品的总质量是多少克?平均质量比标准质量多还是少?多或少几克?(要求写出算式).

答案:

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Personality is to a large extent inherent. A-type parents usually (1) A-type offspring. But the environment must also have a profound effect (2) if competition is important to the parents, it is (3) to become a major factor in the lives of their children.

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