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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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Sports may be fun, but you need to play them safely. Here are some tips to help you stay safe while you’re playing sports in winter. ◎ Get your body ready! Before you do any exercise, be sure to warm up for at least five
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Waste can be seen everywhere in the school. Some (1) ask for more food than they can eat , some students don’t (2) to turn off the water taps after they finish washing, and others often forget to turn off the (3) when th
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—How much is your coat? —Oh, it me 100 yuan.
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My teacher gave me much________on how to study English well when I had some trouble.
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There is________in the bottle,is there?
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We should do what we can________English?
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Though Premier Zhou Enlai________for many years, he still lives in the hearts of Chinese people.
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I found a letter________on the floor when I came into the classroom.
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—Paul, did you see the lantern shows when you were in Xiamen? —Of course! Beautiful lanterns!
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It’s impolite________others.
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I’d like to go________.
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Li Ming used________on the right in China,but he soon gets used________on the left in England.
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—The noodles in this restaurant are very delicious. —Yes, you are right. They make them________.
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—Flowers in my classroom________every week.
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—What a nice dress! Is it made________silk? —Yes. I bought it in Hangzhou.
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Yao Ming is________excellent player, isn’t it?
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书面表达 亲爱的同学,你对未来的生活有怎样的期待呢?请你以 “My life in the future”为题写一篇短文,畅想自己未来的家庭(居住地、家庭成员)、职业和生活(衣、食、住、行、休闲娱乐)。用 will 或 won’t来设想未来。可适当发挥。 提示词:live in …, two children, will be a …, study, …
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选择下面的单词,并以正确的形式填空。 riendly cross fly early camera (1) There’s a sale on today. Let’s take a look at some _____________. (2) It’s difficult for my sister to get up________ on a cold morning. (3) Lilei likes to _________
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任务型阅读 这学期我们七年级设立了许多校本选修课。请你根据以下五位同学对自己兴趣爱好的描述帮助他们选定一门选修课程,并将课程序号(A-F)分别填入相应的空格。其中一项多余。 Subjects A B C D E F Wenzhou History Art Club Music Club Hand-made Club Basketball Club Photo Club Names Hobbies Bill (1)_________ I
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“DIY” is very popular*these days. “DIY” is short for “Do it yourself”. Many American people want to do things by themselves. They don’t like to ask other people to come to help, and they are always happy after a lot of d
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