Hi! Boys and girls! My name is kelly,I am 12 years old. I am a student. I study at XiShan Primary School.I am in Class 1,Grade 5.I have three good teachers. They are Mr Lai, Miss Huang and Miss Lu.
My chinese teacher is Miss Huang. She is beautiful. She wears glasses. She always helps us study and.Music is her favourite. Eevrybody likes her because she has a kind heart.
Miss Lu is our math teacher. She,s very active and smart. She has tress. She,s young and pretty. She,svery strict,but kind. Her class is so much fun.My favourite teacher is Mr Lai. He is our English teacher. He has two small eyes and big mouth. He wears a pair of glasses, too. Because he is a university student. He,s very humoar. He speaks English very well.we like him so much.They are my teachers. Do you like them?
Thank you
奥数题是这样的:2012(1/2010)*(2010/2011。这道题目由于分数特别大,我第一时间的反应就是拆分,把带分数拆成(2012+1/2010)*(2010/2011)
因为这样的话(1/2010)*(2010/2011)就能抵消成1/2011,可是2012×(2010/2011)+(1/2011)这可就难算了,我打了好长的草稿才把算式变成(4044120/2011)+(1/2011),等于(4044121/2011)。这么大的数据答案会是它吗?做完试卷,检查过后,我交了卷,可这道题还是被画上了一个大大的红叉,虽然书上有答案,但我还是决定再做一遍,难道4044121是2011的倍数?我又打了一个草稿,终于得出了答案2011。可这个答案到底对不对呢?我打开书对起了答案,答案虽然和我的.一模一样,可方法却简单多了。虽然同样是拆分,但却拆分成了(2011+1{1/2010}),的确,照这样算下去2011×(2010/2011)变为2010而(2011/2010)×(2010/2011)则就变成了1,再把它们加起来,就等于答案2011了。只用了简简单单的四步就把答案算了出来,这个方法可真是巧妙啊,比我的步骤不仅少了,而且还容易算多了呢!
分数简便运算可真是巧妙啊!
My chinese teacher is Miss Huang. She is beautiful. She wears glasses. She always helps us study and.Music is her favourite. Eevrybody likes her because she has a kind heart.
Miss Lu is our math teacher. She,s very active and smart. She has tress. She,s young and pretty. She,svery strict,but kind. Her class is so much fun.My favourite teacher is Mr Lai. He is our English teacher. He has two small eyes and big mouth. He wears a pair of glasses, too. Because he is a university student. He,s very humoar. He speaks English very well.we like him so much.They are my teachers. Do you like them?
Thank you
1、主题明确。语言流畅。思路清晰。
2、字数在100字以内。
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