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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
can have count sheep be it milk duck uncle cute My uncle is a farmer(农民).He has a big farm.There (1)______many animals and plants on his farm.He has eight cows.They eat grass and produce(生产)(2)______every day.You (3)____
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彼德想要每天弹吉他. Peter wants to ______ every day.
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我在七年级一班. I\’ m in Class One, ______Seven.
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我奶奶有一个大院子. My grandma has ______.
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我来自中国. I ______ China.
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爸爸找不到他的新眼镜. Dad can\’t find his ______.
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It is very important for us to use a dictionary when we study English. When we read some books in English,we often meet some new words.We can use the dictionary to look them up so that we can know them. What can you look
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Cindy:Good morning,Grace! Grace:Good morning,Cindy! Cindy:What\’s this in English? Grace:It\’s a picture. Cindy:What can you see in the picture? Grace:I can see a tree,a white tree. Cindy:OK.Now color the picture. Grace:
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Hello,boys and girls.This is a (1)______of my family. (2)______Frank.I\’m twelve years old.I\’m a student in No.2 Middle School.This is my father. (3)______ name is Dale Brown.He is a teacher in my school.And this is my
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My name is Alice White.White is my (1)______name.I am (2)______12-year-old girl from America.This is my quilt(被子).It (3)______nice.Do you know (4)______color it is?Yes,it\’s yellow and blue.On my quilt,it is a white coat
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你看到一只风筝正在掉下来,你会说( )
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Daming is playing the suona for the time.( )
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The children decide _________a picnic in the park on Sunday.( )
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As a baby,Helen couldn\’t see ______ hear.( )
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Thank you ________ your help.( )
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My family ________ to Hangzhou this summer.( )
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She is having lunch________ the bell rings.( )
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The birds are ________ in the tree.( )
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It will ________ in Beijing tomorrow.( )
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______________apple a day keeps the doctor away!( )
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