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高频错题
#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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Early one morning, an old woman was carrying a big basket of cabbages on her head to the market. She hoped to sell them to people from town. The mountain road was (1) and the old woman was walking carefully because she d
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My dad said quietly to one of the women,"What's going on?"(保持原句意思不变) My dad said quietly to one of the women, "______?"
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The farmers stopped working when it rained hard. (保持原句意思不变) The farmers______ stop working______ it rained hard.
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He picked up his bag and hurried off. (保持原句意思不变) He picked up his bag and______ in a______.
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Mr. Johnson spent two hours cooking the meal. (保持原句意思不变) It______ Mr. Johnson two hours______ cook the meal.
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The crowd stared at the three people. (改为一般疑问句) ______?
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Paul's dad picked up the phone and dialed 110. (对划线部分提问) ______?
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Have you heard about "Survival(生存) Holidays"? "Survival Holidays" is for children to go into the lonely place for exciting activities. Now about 1,100 companies are (1) to take children into the great outdoors without th
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Have you ever considered all the English expressions that include words about clothes?Let's have a look. People wear pants to cover the lower part of their bodies.We sometimes say that people who are nervous have ants in
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Wendy never fails an exam. (改为反意疑问句) Wendy never fails an exam,____________?
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The math problem is too difficult for her to work out. (改为同义句) The math problem is______ difficult______ she can't work it out,
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I spent over half an hour writing my blog yesterday morning.(保持原句意思基本不变) It____________over half an hour to write my blog last morning.
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Our school life is very enjoyable.(改为感叹句) ____________our school life is!
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The Grade Nine students will graduate from middle school in two weeks .(对划线部分提问) ____________will the Grade Nine students graduate from middle school?
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He always goes to play basketball with his friends. (改为否定句) He______ always______ to play basketball with his friends.
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Dear Editor, I am a shy girl. I s__________ speak to boys, even when they choose to talk to me. Sometimes I do want to chat with them, but then my face will turn red. My heart will beat very f__________ . I often hate my
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Once there was a naughty rabbit who liked to play tricks, and it made other animals __________ . One day, a wolf said to a fox,“I have an idea to catch the rabbit. You go back home now and get into bed. I'll go tell the
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The Quest Centre Set in the wild Welsh countryside, the Quest Centre offers a wide range of activities for teenagers, from archery to rope climbing. Want to try something new? Why not take part in one of our special adve
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Complete the following sentences as required (根据所给要求,完成下列句子) : 【 1 】 I have to finish the extra homework tonight. (改为否定句) ________ ________ to finish the extra home work tonight. 【 2 】 There is plenty of water in the wat
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Complete the sentences with the given words in their proper forms (用括号中所给单词的适当形式完成下列句子): 【1】The singer was known by people through many of his music ________ on You Tube. (video) 【2】Joan is as heavy as Tina. They have th
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