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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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八年级·英语·任务型阅读Unit 6 Have you read Treasure Island yet?

Walt Disney was born in 1901.The Mickey Mouse was created in 1927 which made him very famous. He died in 1966, but his work and his dreams did not die. Now people all over the world enjoy his Mickey Mouse and other carto

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八年级·英语·阅读理解Unit 6 Have you read Treasure Island yet?

My friend, Dick has a large police dog. Its name is Jack. Every Saturday afternoon Dick takes Jack for a long walk in the park. Jack likes these long walks very much. One Saturday afternoon, a young man came to visit my

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八年级·英语·阅读理解Unit 6 Have you read Treasure Island yet?

Have you felt annoyed when a cell phone rings during the class? Something must be done to stop this. Now in New York City, USA, a rule is carried out in schools. Students can’t even bring cell phones to school. Is it a g

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八年级·英语·填空题Unit 6 Have you read Treasure Island yet?

Nowadays, more and more people like to travel in their holidays. The other day I read a report about the ____ people spend their holidays. It is reported that in recent years several new holiday habits have developed. __

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八年级·英语·完成句子Unit 5 What's the highest mountain in the world?

英语对我们很重要，别放弃学习它． English is very important to us． Don't__________________ it．

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八年级·英语·完成句子Unit 5 What's the highest mountain in the world?

请随便问我一些关于今天晚会的问题． Please________________________ me some questions about today's party．

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八年级·英语·句子翻译Unit 5 What's the highest mountain in the world?

这棵树是有用的．别砍倒它． This tree is helpful． Don't__________________．

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八年级·英语·单词拼写-单句Unit 5 What's the highest mountain in the world?

We need warm clothes to______（保护） us against the wind．