《用“四舍五入”法求商》综合练习1

《用“四舍五入”法求商（例3、例4）》综合练习

1、说一说，填一填，算一算。

2、在（）里最大能填几？

30×（）＜118 40×（）＜245 70×（）＜315 60×（）＜357 80×（）＜652 90×（）＜448 3、根据试商的情况，很快说出准确的商，填在括号里。

4、笔算下面各题。

98÷22＝ 80÷31＝

350÷52＝ 459÷53＝

5、不用竖式计算，快速写出下面各题的商。

6、把不对的改正过来。

7、计算下面各题，你发现了什么？

8、王大爷家的果园共收苹果378千克，每12千克苹果装一筐，一共可以装几

筐？

9、

■＝▲＋▲＋▲▲＋■＝84 ●＝189÷▲■＝（）▲＝（）●＝（）

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