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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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A: ______? B:He was sleeping when the strong wind came.
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Hi,I\’m David House from the UK,a writer working for Teens Magazine.Here,I help solve the readers\’ problems.I hope I can help with yours. Hi David, I have a nickname called"Big Eater".Every time I have a meal in the din
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—Excuse me.What\’s the to the first math problem? —It\’s 13.( )
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We will go camping if it rain this Sunday.( )
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— Hurry up!we won\’t get to the airport on time ________we catch a "Didi" car. — I\’m coming.( )
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- ____________ is your sister?(how) -15 years old.
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- ____________ do you do homework every day?(how) -For two hours.
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- ____________ is your home from school?(how) -About 2 kilometers.
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My parents and I ________ to the party.( )
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—I'd like some beef noodles,please. —Sorry,sir.Beef noodles only for breakfast.( )
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--Every year, millions of plastic bottles away, polluting the land and waterways. --That's terrible. We should protect our environment.
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Hainan Island ________ to be a good place for sightseeing today.( )
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My dream job is____a pilot,but my parent____me to be a teacher.( )
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______you have a chance to speak English,you should take it.( )
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- -Some juice, please. --Sorry, we______ any juice in our restaurant at the moment. How about some Cola?( )
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This dictionary is ______.(Helen)
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- ____________ will you come back?(how) -In two days.
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We want to ______ some thoughts ______(和……分享……) you.
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Betty is the tallest student at school,but she doesn\’t like being tall.Her classmates make (1)______ of her. "Betty,Betty,long as spaghetti(意大利面)!"They always sing to her.Ella is one of the(2)______ students.She can pla
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--- Miss Li, I find it difficult to make ______ listen to you carefully for long periods. --- Perhaps you should have enough sleep and take notes while listening to me.( )
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