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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
-school clubs Come and have fun together! Photography club Collecting club Time:Fridays:3:15 pm - 5:30 pm Place:Room 201 Activities:There is a photo exhibition(展览).You can enjoy the photos and talk with other students in
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We will call her if she______ on time for the meeting.( )
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Many animals are in danger of _______,_______the polar bear.( )
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be busy ______
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______ you ______(see) your friend when you were in Beijing?
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We had 50 members last year.The number has been d ______ this year —we get 100 members now.
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It\’s a city in the ______(北,北方)of Sichuan Province(省份).
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______(有时)I stay up late.
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The machine is ________ broken,so you must ask somebody to repair it at once.( )
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We couldn\’t buy anything because ____of the shops were open.( )
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Body language is an important part of communication.If you want to communicate well,it\’s important to understand how to use your body to say what you mean,especially when you\’re in a foreign country. If a person is bor
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The skirt must be Judy\’s.(改为否定句) The skirt ____________ Judy\’s.
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Tina used to be an architect.(改为一般疑问句) ______Tina ______to be an architect?
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The students have cleaned the classroom, ?( )
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Wuzhen Theatre Festival Wuzhen Theatre Festival is a theatre event in the ancient water town of Wuzhen in Zhejiang Province,It has become one of the most famous art festivals in China and Asia.Since 2013,the organizers h
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I usually give Mum flowers on ______(妇女) Day.
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President Xi Jinping paid _____ important visit to the US and was welcomed by Donald Trump,______ 45th American president.( )
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A:Hi,Tom. (1)______ B:Yes.What\’s up? A:There is a traditional art show on Sunday.Some of my paper cutting works will be shown there. B:Wow,you are so great! (2)______ A:They are about flowers,birds and fishes.They stand
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Why are talent shows popular? Now we can see lots of talent shows on TV,from the Big Band to the Greatest Dancer and so on.This kind of program is quite popular,especially(尤其)with young people.It now has great impacts (影
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—______ is your new bike? — It\’s 300 yuan.( )
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