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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·英语·句型转换Unit 11 My food project

Rewrite the following sentences as required （根据所给要求 , 改写下列句子）：【 1 】 I need to buy some bread and yoghurt. （改为否定句） I ___________ ___________ to buy any bread or yogurt. 【 2 】 He's taken some photos of his classmates. （改为

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七年级·英语·填空题Unit 11 My food project

Complete the sentences 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】She is ____________ at dancing than singing. (good) 【2】Shanghai is such a(n)___________ city that so many people come and work he

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七年级·英语·选择题Unit 11 My food project

We had ____________ delicious food and drinks.

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七年级·英语·选择题Unit 11 My food project

Why do you ____________ the fish?

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七年级·英语·填空题Unit 10 A birthday party

A rich man asked a great painter to paint a picture f 【 1 】 him. The next day the painter c 【 2 】 back and brought him a small picture. "It's a beautiful picture, " said the rich man. "How much do you want for it?" "One

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七年级·英语·填空题Unit 10 A birthday party

One very cold morning, my father and I were working on the farm. I asked him how long I must stay in the _______. "About an hour. "he answered. "I wish I could go hone now- my _______aches." "I am sorry, but can't you st

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七年级·英语·阅读理解Unit 10 A birthday party

Do you kow that animals have love for each other and their children just like us humans? Let me tell you some moving stories of great animal parents. Several years ago a heavy rain hit a town and made the river go up. Wh

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七年级·英语·阅读理解Unit 10 A birthday party

Tom: Hello! May I speak to Betty? Betty: Speaking. Who's that? Tom: This is Tom. We are going to have a picnic tomorrow. Would you like to join us? Betty: Where are you going? Tom: To the country Park in Pudong. Betty: R

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七年级·英语·句型转换Unit 10 A birthday party

Rewrite the following sentences as required （根据所给要求 , 改写下列句子）【 1 】 I'd like a piece of pizza. （改为一般疑问句） __________ you ____________ a piece of pizza? 【 2 】 Alice gave me a doll as a present. （对划线部分提问） __________ _______

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七年级·英语·填空题Unit 10 A birthday party

Complete the sentences 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】He bought a new house last month. He wants to ______________it. (decoration) 【2】The toy car needs two______________. (battery) 【3

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七年级·英语·选择题Unit 10 A birthday party

-I can't take part in your birthday party. I have to write a report tonight. -___________________________.

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七年级·英语·选择题Unit 10 A birthday party

-I'll go to Qingdao for a trip. What about you? - I have to stay at home. ________.

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七年级·英语·选择题Unit 9 International Food Festival

Are you going to tell your penfriend ____________ your school?

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七年级·英语·选择题Unit 9 International Food Festival

Mum is out. I have to____________ my younger sister.