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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
It\’s Saturday.Look at what these people are doing. City Weather Activity New York Ann is shopping with her mother.She wants to buy a shirt for her father\’s birthday. Shanghai Yang Ling is talking with her friend on QQ.
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I\’m Susan.I plan to do some work in my holiday.I put all my important papers and books in a large paper bag,and then put it in the car. After a long drive to Los Angeles,I am happy to find a hotel close to a park.It\’s
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阅读下面短文,在空格处填入一个适当的词或使用括号中词语的正确形式填空,并将答案填写在答题卷规定的位置上.(共 10 小题,每小题 1 分) China has a rising snowboard(滑雪板) star.Su Yiming(1)______ (win) a championship(冠军) at the International Ski Federation (FIS) Ski and Snowboard World C
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Jim ______( like) sports.We often play basketball together on the playground.
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他们用一种特殊的方式改变我的生活. They use a ______ to change my life.
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- Look!Your father_____now. - Yeah,and he_____for an hour yesterday.( )
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I have a good time with my friends in the park every weekend. (改成同义句) I ____________with my friends in the park every weekend.
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I bought you this book.(写出同义句) I ______ this book ______ you.
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Schools will be different in the future. (改为一般疑问句) ______schools ______different in the future?
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Elephants are the biggest animals that live on land.They live on grasslands and in forests of Africa and Asia.Elephants have long noses called trunks.They have big ears like fans.Their skin is gray-black.They have some s
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Name:Alice From:Cuba Look:long hair,round face,big eyes Clothes:green dress,white shoes QQ number:3786360 Tel:6543752 Name:Brown From:England Look:short blond hair,long face,small blue eyes Clothes:yellow jacket,blue pan
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Ma Liang擅长那么多的事情,他太棒了. Ma Liang is good at __________________.He is very great.
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(2023七下·番禺期末) A lot of things ____of trees. Trees are really important in our daily lives.
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My brother ________ glasses.( )
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Everyone here now.Let\’s our meeting.( )
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Lost: Sherry,3 years old.Help us find our dog.Last seen (最后被看到) in Central Park on June 10 around 4 in the afternoon.Tel:010-6554-7862. Lost: Emma is a black and white Australian sheepdog(牧羊犬),one year old.Last seen(被看见)
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我们医院需要两名医生.你可以让你的女儿试一试. Our hospital needs two doctors.You can ask your daughter ________________________.
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We must save the trees and not buy things__________ ivory.( )
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Let\’s ____________ the rabbits there.One,two,three …twenty rabbits!( )
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Going to bed late__________________(对……有害) your health.
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