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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·填空题Unit 3 Pets

Singapore worries a lot about the fitness of its people. One-third of the people in the country are overweight and about 6% of them are too fat. Every year, September is the health month for "Fighting Obesity （肥胖） ". Thi

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九年级·英语·填空题Unit 3 Pets

Australia's worst pests（害虫）are the rabbits, ______ by a settler who released 24 into the wild for sport hunting. In less than 100 years, the rabbits grow into the millions of ones, leaving large areas of land looking lik

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九年级·英语·阅读理解Unit 3 Pets

Time speaks louder than words. Time communicated in many ways. Think of the different parts of the day, for example. The time of the day when something is done can give a special meaning to the event. In the United State

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九年级·英语·句型转换Unit 3 Pets

Rewrite the following sentenced as required （根据所给要求，改写下列句子。每空格限填一词）【 1 】 Mr. Dancer was tired and went to sleep. （改为否定句） Mr. Dancer ________ tired and ________ go to sleep. 【 2 】 World Expo is held once every five years

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九年级·英语·填空题Unit 3 Pets

Complete the sentenced 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】Mum made a big chocolate cake for little Kevin's ________ birthday.（nine）【2】She was praised for ________ the life of the child.（s

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九年级·英语·填空题Unit 3 Pets

A. so far B. spend C. happen D. full of E. provides For most of us in China, we only have to turn on the tap to get clean water. We seldom think twice about where it comes from. Day after day, thousands of children in po

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九年级·英语·填空题Unit 3 Pets

A. ran B. looked like C. both D. stick E. naughty One evening Nasreddin heard a noise in his garden and looked out of the window. A white ox had got into the garden and was eating his vegetables. Nasreddin at once took h

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九年级·英语·选择题Unit 3 Pets

—Do you mind my opening the windows? —________ It's very hot in the room.

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九年级·英语·选择题从属连词辨析

The teacher explained the sentence again _______ the students could understand better.（）

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九年级·英语·选择题不定代词,动词不定式

The students required _______ 10 minutes _______ finish the work.（）

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九年级·英语·选择题介词辨析,固定短语

You should apologize _______ her _______ your temper.（）