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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|}=
精选练习题目
(2023九上·开学考) — ____ do you feel after a long walk? — A bit tired.
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(2023九上·开学考)假设你的朋友Jack由于长时间玩电脑游戏,现在他头痛、眼睛不舒服、腰背酸痛,并且睡不好觉。请你写一篇短文介绍一下他的情况,并给出你的建议。 要求: 1. 内容包含所提供的信息,可适当发挥; 2. 书写认真,句子通顺; 3. 词数:80词左右。
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(2023九上·开学考) 任务型阅读 Lots of schools in America teach music, but not every school teaches mariachi. Mariachi is a kind of Mexican (墨西哥) music. It has a long history. Richard Edwards Elementary School in Chicago (芝加哥) start
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阅读理解 Beauty sleep is a real thing, researches have shown that people who have enough sleep look more attractive(有魅力的) to others. A few bad nights is enough to make a person look "especially" more ugly, their sleep experi
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阅读理解 Thousands of years ago, in the south of ancient China, there lived Shennong, a man who had an ox(牛) head and human body. Seeing that local people were suffering from disease, he built ladders and houses on a high mo
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(2023九上·开学考) 完形填空 Being street smart is an important skill to have and a good way to take care of yourself. Always carry your phone with you, but do not look at 16. while you are walking. Being able to communicate or cal
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(2016·江西)The water dark and dirty. It's no longer safe to drink.
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(2023九上·开学考)Don't ____ today's work for tomorrow. Today's work must be done today.
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(2018·上海)Catherine has two cousins. One is quiet, and ______ is noisy.
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(2023九上·开学考)—Maybe I can't pass the English test this time, Mum. —Don't worry. Believe in ____.
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(2023九上·开学考)—Sarah, would you like to watch China's Got Talent tonight? —No. ____ So I never watch it.
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(2018·青岛)Mount Lao is one of mountains in Qingdao. Many tourists like climbing it every year.
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(2023九上·开学考)"The early bird catches the worm." means if you want to be ____, you have to do something before others.
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(2023九上·开学考)Reading is like sunshine that brightens your day. It is a good hobby for all kinds of ____.
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(2023九上·开学考)—Is this blue schoolbag Lacy's? —It ____ be hers. Her schoolbag is blue.
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(2023九上·开学考)Life is like a race. I am ____ take on new challenges any time.
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(2023九上·开学考)—When did this book ____? — In 1982.
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(2023九上·开学考)—We can use the video-chat to talk with our friends on WeChat. —Really? Could you please show me how ____ it?
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(2023九上·开学考)If you fail (不及格) in a test, don't be too worried, and try ____ your problems out and work harder.
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(2023九上·开学考)—Why did Sue go out of the room? —Because she couldn't ____ the noisy music.
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