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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|}=
精选练习题目
-- Would you mind watering the flowers for me? --- _______. I have to go the post office.( )
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Which of the following phonetic symbol is correct for the word "control"?( )
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Which of the underlined parts of the words has the same sound as /ə/?( )
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He _______ his arm to _______ his child from hurt.( )
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makes, to, the Internet, possible, us, it, get, for, news, much(连词成句) ______
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My sister made up her mind to study English hard so that she could find a good job. My sister made up her mind to study English hard____________ to find a good job.
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The teachers need a rest room,____________?(反义疑问句)
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The price of flats is so high that many people can't buy them nowadays.(同意转换) Flats are____________ for many people to buy nowadays.
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Shelly wanted to know where to buy a pair of gloves.(改为宾语从句) Shelly wanted to know where____________buy a pair of gloves.
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My father brings a special toy to me from his American company every year.(改为被动语态) A special toy____________ by my father to me every year.
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China needs more______ workers to build some battleships to protect the country. (skill)
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He tried his best to get what he wanted and finally______. (success)
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He said he wouldn't give up _______ he failed in the monthly exam.( )
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Great changes _______ place in Shanghai in the last twenty years.( )
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She studies hard. _______, she plays sports well.( )
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The soldiers wanted to make sure _______.( )
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How many times _______ you _______ that city?( )
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We may have experienced sadness in one way or _______.( )
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—Must I finish writing the report today? —No.You _______ if you have something else to do.( )
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The bus is empty _______ the driver.( )
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