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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·书面表达图表作文

怀化市各中小学正在开展"阳光校园，我们是好伙伴"活动．你的身边一定有很多品学兼优的阳光少年．请你根据表格中所给的信息．写一篇关于你的好伙伴李明同学的演讲稿． Name Li Ming Class Class 8，Grade 9 Behaviors （行为，表现） 1．be polite to everyone，say hello to teachers and classmates 2．get on well with others，

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九年级·英语·书面表达写作表达

规范书写，抄写下列短文，注意书写规范，字迹清晰漂亮，卷面整洁． Everyone is born with the ability to learn．But whether or not you can do this well depends on your learning habits．Learning is a lifelong journey．Everything that you learn becomes a part o

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九年级·英语·填空题任务型阅读

Jeff Keith has only one leg，With a plastic leg，Jeff could skate，ride a bicycle，swim and play soccer．（71）．他也能跑． Jeff made a plan with his friends who had plastic legs，too．They decided to run across America．（72）． That was

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九年级·英语·完成对话补全对话

（Lisa doesn't feel well today．She is at the doctor's．） D：Can I help you？ L：（66） ______ D：When did it star？ L：（67） ______ D：Let me have a look．（68） ______ L：I played computer games all day． D：Mm．That's it． L：Oh．（69） _____

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九年级·英语·填空题其他

Wu Yishu，a 16-year-old student from Shanghai won a Chinese poetry competition in the second season of the Chinese Poetry Conference on Feb.7 th ，2017．She beat other competitors because of her learning about Chinese cultu

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九年级·英语·阅读理解日常生活类

Americans like to have different kinds of parties such as birthday parties，surprise parties，tea parties and house-warming parties．Pajama （睡衣） parties are one of the most popular kinds of parties in the US．At a pajama par

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九年级·英语·阅读理解人物传纪/故事阅读类

Sophie was a lonely girl．One night，she saw a large person．The large person was blowing something into a bedroom from the window．The large person found Sophie，too．So he carried Sophie to his hometown in Giant（巨人） Country．

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九年级·英语·阅读理解日常生活类

Teeth are very important for our health．They will be our lifelong friends．So we should learn to protect them at a very young age．Here are some tips： First，we should eat right． •Don't eat too much candy or drink too much

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九年级·英语·阅读理解广告布告类

Volunteers Wanted Welcome to Huaihua Museum! It's a non-profit（非盈利性的） museum for children under 12 years old． Are you good with children？ Are you interested in history and art？ We need volunteers to work for us on weeken

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九年级·英语·填空题记叙文

A big company wanted to find someone to work for them．Lots of young college students came to ask for the (1) ．And this time，the company didn't plan to choose the right persons as usual． Here came the day when they took t

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九年级·英语·选择题宾语从句

Can you tell me _______？（）

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九年级·英语·选择题代词

-Do you know the man _____ is talking with our Chinese teacher？ --Yes．He is my uncle，Mr．King．（）

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九年级·英语·选择题时态

It's said that a new bridge _______ in my hometown in 2018．（）

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九年级·英语·选择题时态

-Hey，Kate，I called you at 6：30 yesterday evening，but you didn't answer． --Oh，sorry．I ______ at that time．（）