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#2 · 常错题

将循环小数化为分数:整数、有限小数、循环小数都可以化成分数,整数和有限小数化成分数容易,循环小数如何化成分数呢?请看下面的例子. 将循环小数$0.288\ldots $化成分数:将$0.288\ldots $分别乘$10$和$100$,得$2.88\ldots $和$28.88\ldots $,两个得数相减得$26(两个得数小数部分相同)$,而相减所得的$26$应该是$0.288\ldots $的$\left(100-10\right)

#3 · 常错题

今年市委市政府积极推进创建“全国文明城市”工作,市创城办公室为了调查初中学生对“社会主义核心价值观”内容的了解程度\((\)程度分为:“\(A-\)十分熟悉”,“\(B-\)了解较多”,“\(C-\)了解较少”,“\(D-\)不知道”\()\),对我市一所中学的学生进行了随机抽样调查,根据调查结果绘制了两幅不完整的统计图如图,根据信息解答下列问题: \((1)\)本次抽样调查了多少名学生; \((2)\)补全条形统计图和扇形统计图; \

#4 · 常错题

#5 · 常错题

一批水果的标准质量是$30$千克,超出标准质量记为正,低于标准质量记为负,现记录如下:$+8$,$-9$,$-5$,$+7$,$-8$,$-6$,$+7$,$+10$. $(1)$这批水果总共有多少千克? $(2)$第一天按每千克价格$5$元卖出了这批水果的一半,第二天为了吸引顾客把第一天卖水果的价格降价$20\%$后作为新的价格,卖完了剩下的水果,请计算一下这批水果一共卖了多少钱?

#6 · 常错题

分类讨论思想是数学的重要思想,在学习有理数的过程中,也深有感受$!$ $(1)$当$ab \lt 0$时,若$b \gt 0$,$|a| \lt |b|$,则$a+b \_\_\_\_\_\_0$; $(2)$当$abc \lt 0$时,若$ab \gt 0$,则$c \_\_\_\_\_\_0$; $(3)$已知$a$,$b$,$c$是非零有理数,则$\frac{a}{|a|}+\frac{b}{|b|}+\frac{c}{|c|}=

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八年级上·英语·阅读理解Unit 6 Ancient stories

阅读理解 Once upon a time, there lived an old man. He had three sons. One day, he called them together and said, "Sons, I will die soon. To my eldest son give half my camels, to my second, one third(三分之ー), and to my youngest

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七年级上·英语·阅读理解Unit 2 Daily Life

阅读理解Next Tuesday is my mother's birthday. I love her and I'd like to give her a nice gift. What should I buy? I hear shopping online is easy and quick And we can buy anything we want through it. But I'm not sure whether

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七年级上·英语·阅读理解Unit 2 Daily Life

根据短文内容,选择正确答案。A My family lives in London. In the morning, my father goes to work and we go to school. My father takes us to school every day. My mother stays at home. She does the housework. She always has lunch at home

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七年级上·英语·阅读理解Unit 2 Daily Life

阅读理解 Don't be too surprised if you see a car going down the road without a driver in Beijing these days. It might be one of Baidu's self-driving cars. Last month, Baidu was granted (授予) a license to test its self-driving

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七年级上·英语·阅读理解Unit 2 Daily Life

阅读理解 Hello, everyone. My name is Alice. I usually go to school by bus, but the day before Christmas, I ride a bike to school. On my way, I find a box lying on the road. I stop my bike and pick up the box. I open it and s

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七年级上·英语·填空题Unit 2 Daily Life

完形填空 Hello! (1) name is Li Ying. I'm twelve. I'm from Kunming. Now I'm in Beijing No.14 High School. I'm (2) Class Five, Grade Seven. Miss Gao (3) my English teacher. She is (4) old teacher. I have a pen, a ruler and two

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七年级上·英语·填空题Unit 2 Daily Life

完形填空Dear Bob, Today is my first day in this school. I want to (1) you something about my new school. My school is not (2) but very beautiful. There are three tall buildings in it. In the middle of (3) school. There is a

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七年级上·英语·填空题Unit 2 Daily Life

根据短文理解,从A、B、C、D四个选项中选择最佳答案填空。 My uncle works in a shop. It's near an English (1) . Every day the students come to (2) things. In the (3) , my uncle gets up at six o'clock and after breakfast he (4) his bike to the shop.

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七年级上·英语·填空题Unit 2 Daily Life

完形填空 When I was a little boy, my mother sold flowers in London. She couldn't (1) me at home, so I had to go with her. As I grew older, I began to (2) her and I really enjoyed it.Things changed (改变) when I was 14. My gran

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九年级·英语·阅读理解Unit 5 Look into Science

What subject do you worry about the most at school? Many students worry about math. Some students can't sleep well the day before a math exam. Others may feel very nervous during the exam itself. But there might be a way

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九年级·英语·填空题Unit 5 Look into Science

Dear Jenny, How kind you are! Thank you for sending me the movie 【 1 】 (ticket). In fact, I started collecting tickets when I was 【 2 】 child. At that time, I didn't like learning school subjects. In order to make me foc

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九年级·英语·单词拼写Unit 5 Look into Science

(2020 原创 ) U ______ you can sleep well, you will lose the ability to focus on your study.

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九年级·英语·单词拼写Unit 5 Look into Science

(2020 原创 ) If we have set a goal in learning, we should take a ______ at once.

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九年级·英语·填空题Unit 5 Look into Science

(2020 原创 ) ______ (general)speaking, boys are more interested in playing basketball.

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九年级·英语·填空题Unit 5 Look into Science

(2020 原创 ) Zhang Yimou has ______ (direct) so many movies. He is an excellent director.

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九年级·英语·填空题Unit 5 Look into Science

(2020 原创 ) You can think about different ______ (method) to solve the difficult problem.

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八年级上·英语·填空题Unit 5 Educational exchanges

完形填空 One day before my final exam, my dad gave me a gift. It completely changed my life. On that day I had a (1) with my friends and it was a difficult time with my studies. I was unhappy. Then I noticed the gift. I (2)

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八年级上·英语·填空题Unit 5 Educational exchanges

阅读下面短文,从短文后所给的A、B、C三个选项中选出能填入相应空白处的最佳选项。 September is the time for students to go back to school! For Chinese students, most schools start on the same day. We will share summer stories with the same classmates (1) the fi

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八年级上·英语·翻译Unit 5 Educational exchanges

参加教育交流是一次极好的体验。 a fantastic experience an educational exchange.

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八年级上·英语·翻译Unit 5 Educational exchanges

很多年轻人已经申请了工作。 Many young people jobs.

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