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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·填空题Unit 3 Language in use.

People think the Internet is very _____ in our daily life. It is one of the greatest inventions( 发明 )in the world. On the Internet, we can _____ the news and get much information. We can send _____ to our families and fr

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七年级·英语·其他Unit 3 Language in use.

用适当的疑问词填空【1】—______does he work? —In a library. 【2】—_____ is the boy under the tree? —He is my friend Jim. 【3】—______colour is your coat? —It's brown. 【4】—_____ _____days are there in a week? —Seven days. 【5】—_____ ____

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七年级·英语·填空题Unit 3 Language in use.

用括号中所给单词的适当形式填空【1】My mother often ________(watch)TV at night. 【2】Mike wants _________(visit)his grandparents very much. 【3】My sister often_________(talk)to her friends on the Internet. 【4】Little Lily ___________(not kno

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七年级·英语·单词拼写Unit 3 Language in use.

根据句意及汉语提示完成单词【1】Sandy wants to_________(旅行)to Europe. 【2】There is a new _________(电影院)in my city. 【3】This book has all the ___________(信息)you need. 【4】Some children need to go to school by _________(火车). 【5】My brother l

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八年级·英语·任务型阅读-多任务混合Unit 1 The population of China is about 1.37 billion.

Running away is a serious problem．There are lots of runaway and homeless kids living in the streets around the world．孩子们为什么想离家出走呢？ ★Some kids run away because they have problems with their families． ★Some kids run away

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八年级·英语·阅读理解Unit 1 The population of China is about 1.37 billion.

Want to do some volunteer work？Here are some"green"opportunities． FUN Society FUN Society is an organization started by some young people to encourage the young to protect the environment．It is preparing for some summer

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八年级·英语·填空题Unit 1 The population of China is about 1.37 billion.

Henry Bond was about seven years old when his father died．His mother found it (1) to support the large family．However，she tried her best to do so．Also，she (2) Henry，the eldest son，to school． At one time，Henry needed a gr

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八年级·英语·选择题Unit 1 The population of China is about 1.37 billion.

- Boy， your head teacher has set up a WeChat group． Could you tell me ______？ - OK． I'll teach you． It's so easy．（）

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八年级·英语·选择题Unit 1 The population of China is about 1.37 billion.

Some small factories and lots of workers lost their jobs．（）

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八年级·英语·选择题Unit 1 The population of China is about 1.37 billion.

We couldn't see the road clearly the heavy snow．（）

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八年级·英语·选择题Unit 1 The population of China is about 1.37 billion.

My father is thinking hard．He wants to the trouble．