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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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Our school will spend 7 thousand yuan ________the old classroom _______.( )
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---You look thirsty.What would you like to drink,juice or coffee? --- Coffee,please,and I prefer coffee________milk.( )
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---Do you know______this dictionary belongs to? ---Let me see.Oh,it's______.( )
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His uncle would rather________the old bike than________a new one.( )
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It was getting too dark.Lisa didn't arrive home.Her parents were________her safety.( )
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The girl didn't have enough ________ to tell the teacher the truth,but her parents encouraged her not to tell lies.( )
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Tom has much difficulty the article so he often asks me help.( )
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-- You didn't watch the movie? -- Yes, but by the time I to the cinema, the movie for several minutes.( )
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---Shall we call for a taxi? ---OK.Let me ________the phone number in Yellow Pages.( )
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-Which of these two English books will you borrow? -I'll borrow of them.Because they are very interesting.( )
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Anna is preparing for the coming exam, so she has to____the invitation to the party.( )
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-Oh, dear! I can't find my key to the office. -Don't worry. I think you might ________ it in your car.( )
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---Sam,here is _________news report for you. ---I hope it can be ________useful information for my graduation paper.( )
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Which of the underlined letters makes a different sound?( )
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从下列选项中找出单词重读音节与所给示例不同的选项. carrot( )
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Did you know that tea, the most popular drink in the world (after water), was invented by accident? Many people believe that tea was (1) (one) drunk about 5,000 years ago. It is said that a Chinese ruler called Shen Nong
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The summer holiday is coming. We are going to have ________ holiday.
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---- Watching TV too much ______ bad for your eyes . -----I'll go to bed right away .
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—Why do you like living in the countryside? —Because there’s _______ noise and _______ cars there.
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按顺序规范地填写所给字母的左邻右舍. Ee Gg
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