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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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Our family went to the Yellow Stone National Park last summer vacation.Our son,Tom,wanted to see bears there.And what an experience it was! When we got there,we put up our tent and went to explore(探险).As we returned,we h
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—I hear that Annie has gone to the Shanghai Disneyland for her holiday. — Oh,that\’s great!Do you know when she ______( return).
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something important,to,you,has,she,tell ______.
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Megan has got used to using c ______ in China.
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be watch chance begin wonderful it enjoy favorite game do In almost every big city in the United States,football is a popular sport. American football is not like soccer.Players sometimes kick(踢) the ball,but they also t
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Here\’s the travel plan for our "Castles ( 城堡) of Europe" tour.We hope you enjoy it. Leeds Castle,Maidstone (England) Standing in the middle of a lake,Leeds Castle is the perfect castle.You\’ll see the place where King E
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Did you climb a tree when you were young?How did you feel?What if you have a"tree climbing class" at school?A primary school in Hangzhou has opened a"tree climbing class" recently.Quite a lot of people are interested in
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your,not,at,you,finger,others,should,with,point. ______.
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昨天莉莉唱得最美. ______
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on a project, protect the environment, is working, these days, the young man, to help.(连词成句) ______.
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Someone says, "Time is money." But I think time is much(1)______important than money.Why?Because when money is spent,we can get it back.But,when time is gone,it will never(2)______.That is(3)______we mustn\’t waste time.
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You can spend time with your friends_____you play sports together.( )
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Do you know how to ask for and give directions(方向)well?Let me give you some great ways. Ask for directions Remember,it\’s important to be polite(有礼貌的).Always start with a "Hello" or "Excuse me",and then don\’t forget to
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"Poor Grandma!I wish we could do something to cheer her up",Amy said to her brother Mark. Grandma (1)______and hurt her leg.The doctor said she would be in bed for six weeks.Grandma was very active and loved to (2)______
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The P ______ Museum is in Beijing.
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