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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·连词成句Unit 7 Sports and Good Health

Lily, Sanya, vacation, is going to , for __________________________________________________________ .

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七年级·英语·连词成句Unit 7 Sports and Good Health

can, herself, girl, look after, little, the __________________________________________________________ .

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七年级·英语·填空题Unit 7 Sports and Good Health

Nick is a 14yearold schoolboy. His life is full 【 1 】 exams and studies on weekdays. He got into the h 【 2 】 of playing computer games when he was free. He thought it was the 【 3 】 (good) way to make him relaxed. He en

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七年级·英语·单词拼写Unit 7 Sports and Good Health

What will you do ________ I don't arrive here on time?

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It is a c ________ day today! Let's go out for a mountain climbing.

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七年级·英语·单词拼写Unit 7 Sports and Good Health

There was a rain yesterday evening. So the t ________ was low this morning.

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Autumn is coming. The t 【 1 】 is going down. Have you 【 2 】 (notice) golden yellow leaves fall from trees? For Chinese people, autumn is a special season b 【 3 】 it's a time for resting and rebuilding. According 【 4 】 Tr

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七年级·英语·单词拼写Unit 8 Summer Holiday Is Coming!

(2020 原创 )I will fly to Shanghai tomorrow. So please w ________ me up at six.

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七年级·英语·填空题Unit 8 Summer Holiday Is Coming!

(2020 原创 )There ________ (be) a big tree in front of the house. Later it was cut down.

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七年级·英语·填空题Unit 8 Summer Holiday Is Coming!

(2020 原创 )You can give us an ________ (introduce)about your plan before the meeting starts.

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七年级·英语·填空题Unit 8 Summer Holiday Is Coming!

(2020 原创 )Julia ________ (decide) to do a parttime job during the summer vacation yesterday.