数学题:小军参加英语竞赛，前三轮的平均的平均分是94，前四轮的平均分是95分，小军第四轮的得分是多少？（求解题列式）

数学题解答：用前四轮的总分，减去前三轮的总分，就是第四轮的得分。

知道平均数，来求总数的关系式：总数＝平均数×份数

95 × 4 – 94 × 3 =?

这样就可以算出第四轮的得分了，具体得数自己算一下吧！

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