《2025年快乐过暑假江苏凤凰科学技术出版社三年级提优版》

2. 一块长 80 米、宽 60 米的长方形水稻田,每平方米可收获稻谷 4 千克,这块水稻田一共可以收获稻谷多少千克?

答案： 2.$4×80×60=19200$(千克)

书面表达。
新学期,老师和同学们一起补充学校规则。请根据已有的规则,写出你补充的规则内容吧。
注意:1.书写工整;2.大小写、标点符号正确。
Here are some rules we should follow. Don't shout in the classroom. Please keep quiet. Don't be late. If you are late, you should say sorry and don't be late again. Don't pick up flowers. Flowers are beautiful and we should protect(保护) them.
I have some important rules.

答案： Don't run in the hallway.
You must keep quiet in the library.
Don't eat in the classroom.
Always line up in the canteen.
Don't talk in class.
Let's follow the rules and make our school better!