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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·完成句子Lesson 12 Generation Gap

如果你去一个太空博物馆,你会学到很多知识. If you______ to a space museum, you______a lot.

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八年级·英语·完成句子Lesson 12 Generation Gap

只要天气好,早晨我就锻炼. I exercise in the morning______the weather is fine.

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八年级·英语·填空题Lesson 12 Generation Gap

If it______(rain) tomorrow,we won't go swimming.

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八年级·英语·填空题Lesson 12 Generation Gap

If she______(not get) home on time, her mom______(be) worried.

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七年级·英语·阅读理解Unit 4 Save the trees

阅读短文,下列问题 Most people in the office have a boss ( 老板 ) . So do I ( 我也是 ). But my boss is a little unusual. What’s unusual about him? It’s a big dog. Many men have dogs, but few men bring their dogs to the office every da

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七年级·英语·选择题Unit 4 Save the trees

Look! All people _______ fun at the beach.

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七年级·英语·选择题Unit 4 Save the trees

We can get many things _______ trees.

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七年级·英语·选择题Unit 4 Save the trees

The medicine kept the patient _______ for another month.

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七年级·英语·选择题Unit 4 Save the trees

We ________ oxygen _______ the air and release ( 释放 ) CO2 into the air.

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七年级·英语·选择题Unit 4 Save the trees

Be quiet! The students _______ a class now.

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七年级·英语·选择题Unit 4 Save the trees

I can't imagine a world _______ water.

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七年级·英语·选择题Unit 4 Save the trees

I'm going to the library today. I need some ______ about trees.

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九年级·英语·书面表达Unit 3 Going places

Writing(作文) Write a passage of at least 60 words on the topic "The Most Exciting Moment"(以“最激动的时刻”为题写一篇不少于60个词的短文,标点符号不占格。) * Questions for reference.(以下问题仅供参考。) * What happened that day? * How did you feel? * Why was it

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九年级·英语·任务型阅读Unit 3 Going places

Answer the questions(根据短文内容回答下列问题) Mrs Burt was walking along a San Francisco street. Suddenly a man took her purse and ran. She was very angry. She had ten dollars, her bus pass, and the key to her house in her purse. M

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八年级·英语·书面表达Lesson 15 Life in the 1950s

He came a______ last week and we chatted for a while.

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八年级·英语·书面表达Lesson 15 Life in the 1950s

You will get w______ if you go out without an umbrella.

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八年级·英语·书面表达Lesson 15 Life in the 1950s

Mary married a man w______ a lot of money.

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八年级·英语·书面表达Lesson 15 Life in the 1950s

Don't m______ it before the children.

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八年级·英语·单词拼写-单句Lesson 15 Life in the 1950s

Most old films were in black and______(白的).

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八年级·英语·单词拼写-单句Lesson 15 Life in the 1950s

The______(中央的)heating was turned off.

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