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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)

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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; \

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#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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九年级·英语·书面表达Unit 1 Ancient Greece

A wise person 每个人的周围肯定有各种各样的有智慧或者聪明的人。请选择一个你所认识的人,用一件事说说他/她是这样的一个人。同时你能从他/她身上学到点什么呢?

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九年级·英语·解答题Unit 1 Ancient Greece

How would you persuade(劝说)your parents to support your dream? American actress Emma Stone created a PowerPoint presentation(陈述)to get her argument across. Stone is a rising star in Hollywood. She has played the role of G

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九年级·英语·书面表达Unit 5 The human brain

Writing (作文) Write a passage with at least 60 words about the topic "The Way ( s ) I Learn English". (以“我学习英语的方法”为话题,写一篇不少于 60 个词的短文,标点符号不占格。)(注意:短文中不得出现考生的姓名、校名及其他相关信息,否则不予评分。) Questions for reference. (以下问题仅供参考。) * How

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九年级·英语·任务型阅读Unit 5 The human brain

Some people from the country think that city life is the most interesting. They come to visit friends or go to a hotel in the city. They may stay for a few days or as long as a week. Some visitors think that foreign rest

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九年级·英语·书面表达Unit 4 Computers

Writing (作文) Write at least 60 words according to the given topic "I Hope...". (以“我希望……”为题写作,要求语句正确通顺,内容连贯,词数不少于 60 个。) Suggested point: What are you planning to do and see? I Hope... ____________________________________

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九年级·英语·任务型阅读Unit 4 Computers

When all the housewives went to the new supermarket, they had one great hope in mind: to be the lucky customer. Then they did not have to pay for their shopping, for this was what the notice just inside the entrance prom

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九年级·英语·书面表达Unit 7 Escaping from kidnappers

Write at least 60 words about the topic "I like comic strips". (以"我喜欢漫画"为题写一篇不少于60词的短文,标点符号不占格.) The following are for reference only. (1)Do you like comic strips? (2)Why do you like them? .

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九年级·英语·解答题Unit 7 Escaping from kidnappers

The Italian Language Italian is a language which comes from Latin. Not all people in Italy speak proper Italian, but one of its many Italian dialects (方言). The pronunciation is soft and is still used in opera. Even Germa

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九年级·英语·书面表达Unit 6 Detectives

Writing(作文) Write a passage of at least 60 words on the topic "The Most Attractive Story I Have Read".(以“我读过的最具吸引力的故事”为题,写一篇不少于60个词的短文,标点符号不占格。)(注意:短文中不得出现任何人名、校名及其他相关信息,否则不予评分。) Use the following points as a reference.(

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九年级·英语·任务型阅读Unit 6 Detectives

Answer the questions(根据短文内容回答下列问题) Australia is almost as large as China(China is about 9,600,000 km2 while Australia is 7,682,300 km2),but Australia has a much smaller population(just over 19. 5 million). Most people li

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九年级·英语·填空题Unit 4 Life on Mars

Phil is a scientist for NASA. Scientists are always asking questions. One question Phil has is:”Are Rocks on the Earth l 【 1 】 rocks on Mars?” The first step was to collect rocks from around the world. I 【 2 】 of collect

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九年级·英语·选择题Unit 4 Life on Mars

-- l’m always a little nervous when I talk to Mr. Smith. -- _____ He is strict, but he is kind to his students. -_,

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九年级·英语·选择题Unit 4 Life on Mars

If you don’t want to go to see the movie this evening, neither ______ I.

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九年级·英语·选择题Unit 4 Life on Mars

_________ delicious the food is!

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九年级·英语·选择题Unit 4 Life on Mars

There are a lot of buildings on _______ side of the street.

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九年级·英语·选择题Unit 4 Life on Mars

You should take the medicine ________ the three meals.

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九年级·英语·选择题Unit 4 Life on Mars

The train runs _______ a speed of 180 kilometres per hour.

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九年级·英语·单词拼写Unit 4 Life on Mars

【1】Reading is a good _______ (形式)of learning English. 【2】Mars is one of the _________(行星) of the sun and it goes round the sun. 【3】These boots are _________ (专门地)designed for the children under 6 years old. 【4】Meals on M

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九年级·英语·补全对话Unit 3 Robot

A: What are you doing, Linda? B: 【 1 】 A: An experiment? What is it about? B: A theory about air pressure. I fill a jar with water. I cover the top with a piece of cardboard. Then, I turn the jar upside down. 【 2 】 A: I

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九年级·英语·填空题Unit 3 Robot

What makes milk so powerful? Let’s see what’s in 100 grams( 克 )of milk fresh from a 【 1 】 ! Water makes up the 【 2 】 part, with around 【 3 】 grams. The second largest part is lactose( 乳糖 ), or the sugar in milk. There is

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