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#1 · 常错题

#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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九年级·英语·填空题Unit 1 Saving the Earth

Choose the words or expressions and complete the passage（选择最恰当的单词或词组完成短文） Researcher Robert Engelman frown Population Action International says by the year 2025 about 3000 million people may lack water. At least 18 more

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九年级·英语·阅读理解Unit 1 Saving the Earth

Choose the best answer（根据短文内容，选择最恰当的答案） The famous fat and lazy cat Garfield is coming to China. Garfield, the movie opens in cinemas around the country on Friday. In this American movie, Garfield acts with real actors.

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九年级·英语·句型转换Unit 1 Saving the Earth

Rewrite the following sentences as required（根据所给要求，改写下列句子。每空格限填一词）【1】The disease spread quickly in this small village.（否定句） The disease ________ ________ quickly in this small village. 【2】Jim had a wonderful time with h

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九年级·英语·填空题Unit 1 Saving the Earth

Complete the sentenced with the given words in their proper forms（用括号中所给单词的适当形式完成下列句子）【1】The environment will be ________ polluted if people don't take any action.（serious）【2】Tom practised ________ the piano every nigh

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九年级·英语·填空题Unit 1 Saving the Earth

A. retired B. in fact C. charity D. messages E. argued One million copies of the seven comic strips describing Mandela's （曼德拉） life were published in South Africa. That was a part of events celebrating his 87th birthday

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九年级·英语·填空题Unit 1 Saving the Earth

A. partner B. patient C. downstairs D. get on with E. at the same time Dominic is my neighbour. He lives in the flat 【 1 】 . He moved in about two months ago. I've never seen him or spoken to him and I didn't know his na

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九年级·英语·选择题Unit 1 Saving the Earth

—Thank you for inviting us to dinner. —________. We're so happy to have you as our guest.

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八年级·英语·句子翻译Unit 1 It's taller than many other buildings.

深圳人口是多少？ ______

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八年级·英语·句子翻译Unit 1 It's taller than many other buildings.

一年中的任何时间你都可以来英国，但是要随身带着一把伞． ______

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八年级·英语·句子翻译Unit 1 It's taller than many other buildings.

英国从不会夏天很热或冬天很冷． ______