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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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choose, call, bad, between, something, whether, hard, reply, spend, new In the past I didn't like my mum. She was always working. She didn't (1) much time with me. One month ago I took part in a three-day self-help progr
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再见到你我很高兴. (be pleased to do) ______
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How old are you?Have you created anything useful?Do you know Kelvin Doe?Let me tell you something about him. Kelvin Doe is an African boy.Though he is very clever,his family is so poor that he can't go to school.When mos
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Little Jerry gets up early______he can get there on time.
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Please compare this book______that one.And find out the differences between them.
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—The Tshirt feels very comfortable.What's it made ______? —Silk,I think.
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I will go home to watch TV rather than______this film.
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Many foreigners prefer things that are made in China _____________.
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Ⅰ.用适当的介词填空 【1】My father sometimes buys his breakfast ______ his way to work. 【2】Look at the poster ______ a photo ______ Yao Ming ______ the wall. 【3】You know fish can't live ______ water. 【4】Little Tom is learning to wr
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In a few years' time , it will be possible to make things yourself with a 3dimensional 【 1 】 . You download 3D designs (图案) online , then push “print” . Hours 【 2 】 , a real object will come out 【 3 】 your printer . All
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Ⅲ.用所给单词的适当形式填空 【1】The bridge ____________(finish)in three weeks. 【2】You can go out if your homework ____________(do). 【3】This is one of the things that ____________(see)that day. 【4】This is the only one of the things tha
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—Can you ______ this novel ______ me? —You'd better ______ one ______ the library.
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—Sir, could you please put out your cigarette? This is a smoke-free (无烟的) school. —______
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Ⅲ.句型转换 【 1 】 Have you heard of the magazine called Reader ? (改为复合句) Have you heard of the magazine ______ ______ ______ Reader ? 【 2 】 Lucy told an interesting story. (改为感叹句) ______ ______ ______ story Lucy told! 【 3 】 I
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______ Tom ______ Mary speak Chinese very well, so they can communicate with these Chinese students very well.
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—May I ______ your Chinese English Dictionary? —Sorry, I ______ it at home.
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We need two more rooms ______.
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