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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|}=
精选练习题目
阅读下面短文,完成1至5小题. Scrooge was a businessman.One night,his dead business partner Jacob Marley walked through the wall. "Jacob!" cried Scrooge. "Why are you here?""When I lived,I should have cared about people," said Marley.
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No experience ______(require)to be a Helping Hand Club member.Join us!
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我这样能提高我的口语技能吗? Can I improve my ____________by this way ?
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Mrs.Brown had to sit down and rest every five minutes .(就划线部分提问) ______did Mrs Brawn hare to sit down and rest?
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-Oh,the room is too dirty,Tony! -Sorry,Mom.It______yesterday.I forgot to do it.( )
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Don't eat the cake.It in the fridge for more than a week.( )
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The Chinese students in Ukraine(乌克兰) back home by plane from China.They are safe now.( )
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Here is the content(目录)of a book. Unit Readings Skills Words Unit 1 Music *Music & Feelings *Sad movies *Understanding main ideas *Predicting by title *Kinds of Music *Music stars Unit 2 Sports *National Sports *The anci
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Today is December 15,2031.Influenced by the launch of the first manned mission to Mars next month,you will most likely get a gift card for a space trip. The interest in space trips has grown steadily among people since s
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The Guangzhou government continues to carry out the selection activities of"Guangzhou Good People",The purpose of the activity is to encourage people to take part in making a better society.Song Jinjin was honored to win
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—Zhao Liying ______ (present) with the Best Actress Award at 2024 Feitian Awards. —Yes,she said she never thought such a great thing could happen to her.
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A pop-up installation (弹出式装置) that looked like a bookstore was open in Shanghai.It drew much attention because of its unusual offering.The 9-square-metre place could hold only six people at a time.The 3,000 old books on
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At home,students should ______ (educate) to look after themselves from a young age.
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Octopuses(章鱼)are famous for their round bodies,big eyes and eight arms.There are many different types of octopuses,but one thing about them is the same:They are good at disguising(伪装)themselves.Octopuses can change their
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There are different types of maps.Let\’s have a look at their uses,and you will get more knowledge. Tourist maps,for example,have signs to show places of interest in an area.When tourists read these maps,it is easy for t
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Jane will leave Beijing in three days . (就划线部分提问) ______will Jane leave Beijing?
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My mobile phone is ________ now. May I use yours?
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My washing machine _________this week, so I have to wash my clothes by hand.( )
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As an exchange student,I studied in France for two years.The first time I took a class in the chemistry laboratory,I was surprised to find that students were fully"armed".Everyone was wearing goggles(护目镜) and gloves.Safe
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There was a group of teenagers standing on the street ______(角落).
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