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高频错题
#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
Once there live an old frog(蛙).He was a big frog and he was very proud of his big size.All the other frogs saw him as their king.Even the(1)______in the river were careful not to make him angry.The frog rules(统治)his wate
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There was once a king who had a great palace with a wonderful garden.He was happier than (1)______else there.In the garden,there lived all kinds of animals.All of them enjoyed(2)______there. The king was very happy with
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选出ABCD中发音不同的一项( )
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请选出划线部分与其他选项发音不同的一项.( )
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假如上图是你的房间,请你根据所给图片,以"My Room"为题,用英语写一篇短文,并谈谈你的看法. 要求: (1)至少介绍四件物品(颜色与位置); (2)语句通顺,意思连贯,书写工整; (3)文章中不出现真实的人名或地名等信息; (4)词数:不少于60词. My Room This is my room._____
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you,like,my;room ______?
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it,blue,green ______.
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schoolbag,on,chair ______.
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it,small but tidy ______
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this,my,room ______.
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A:Good morning,Dale! B:(1)______,Ms.Miller! A:Who is the boy in black? (2)______ ? B:No.He isn\’t Jim. A:Oh,sorry.(3)______ ? B:His name is Sam.By the way,Ms.Miller,is this your bag? A:(4)______ .My bag is not blue. B:(5
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Hello,everyone.My name is Jim.I have two friends.They are Carl and Eric.We all love sports. I like basketball.I always play basketball with my classmates at school.I play it with Carl and Eric on Sundays.I love doing spo
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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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