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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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七年级上·英语·填空题Section A

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七年级上·英语·填空题Section A

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九年级·英语·补全对话Unit 3 Robot

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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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九年级·英语·阅读理解Unit 3 Robot

The following are three ads. 【1】If you want to work in the south, you can apply for a job ad ________. A. a driver B. an air hostess C. a teacher D. all of the above 【2】You may call _______ if you wish to be a teacher. A

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九年级·英语·任务型阅读Unit 3 Robot

The computer is a useful machine．It can help people a lot in their daily life．For example， it can help people to save much time to do much work，and it can help people to work out complicated（复杂的）problems that people can'

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九年级·英语·填空题Unit 3 Robot

【1】For a moment he was completely __________ (knock) over by the news of his friend’s death. 【2】Let Simon go to the post office __________ (post) this letter. 【3】He doesn’t need __________ (go) home now. 【4】Before I got

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九年级·英语·填空题Unit 3 Robot

【1】There is an _________ of oil paintings in the museum.(exhibit) 【2】I have decided to write a __________(complain) letter for my broken bike. 【3】I have no __________ (wash) machines in my home. 【4】Chen Dan is not at all

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九年级·英语·句型转换Unit 3 Robot

【1】Not only Jack but also Mike has been to that island.(改为同义句) _____________ Jack and Mike ____________ been to that island. 【2】The digital camera was so expensive that she had to think about it.(改为同义句) The digital camer

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九年级·英语·任务型阅读Unit 3 Robot

Are you tired after studying hard? American country music will take you away for a while. ① The guitars and songs will transport ( 传送 ) you to the mountains and fields there. Country is simple music. It talks of everyday

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八年级·英语·选择题Unit 7 Seasons

There is _______ water in the glass, but it’s _______ cold. You’d better not drink it.

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八年级·英语·选择题Unit 7 Seasons

Listen! Did you hear the_______ shouts? The match must be exciting.

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七年级·英语·单词拼写/单词释义Section B

这是我的全家福。 This is __________________.

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七年级·英语·单词拼写/单词释义Section B

这儿是他的两个漂亮女儿。 Here ______his two beautiful ______.