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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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对方向你道歉,你可以这样应答: ______.
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-Our classroom ____ every day. -So it is.It's our duty to keep it clean.( )
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Mr.Zhang got up very early ______he could catch the early bus.( )
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-Do you know if Simon ___the writing competition next week? -He will if his project about nature ___.( )
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用方框中所给单词的适当形式填空,使短文完整正确.(每个单词限用一次,每空限填一个单词.) try well be can age make chance you wait watch As we all know,English is becoming more and more important.It\’s like an open window and we(1)______ know more about the outside
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The police caught some ______ last night. (thief)
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His shoes black.His are white.( )
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—________ —The boy next to the red car.( )
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A shop owner put up a sign above his door that said: "Pets For Sale".Just as he expected,a boy appeared at the sign. "How much are you going to sell the dogs for?" he asked. The owner replied, "Any money from $30 to$50."
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—It\’s raining really hard! —Yeah,what ________ awful day!I planned to play outside.( )
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There ______ a small lake in the garden two years ago.
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Mary used to play tennis,didn't she? ( 作否定回答) ______
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Tom used to be a worker, ____________? (完成反意疑问句)
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Hunan,a province in Central China,is the birthplace of China\’s greatest thinkers,scientists and leaders. Wei Yuan ( 1794-1857 ) was born in Shaoyang,Hunan.He was the first Chinese thinker in modern times to open his min
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Helpful First Aid Guidelines(指南) Broken Arm To make it less painful,put an ice cake on the arm.If it\’s too cold,cover the arm with cloth first.It\’s important to keep the arm still and never move it. Insect Bite If the
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—The competition is so boring! —True.I can\’t it anymore.( )
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I ice skating this Sunday.Do you want to come?( )
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A sperm whale is ______ (heavy) than a killer whale.
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Hello,boys and girls!I\’m Gina.I am a middle school student.My mother and I like books.You can see many books in our house. With my mother\’s help,our house is now a shared (共享的) library and it is tidy.Two bookcases are
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--I can\’t believe we are in the countryside of Hefei. --It greatly over the past few years under the right leadership of the government.( )
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