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#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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七年级·英语·填空题现在完成进行时
Tom has a long neck. （改为否定句） Tom ____________a long neck.
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七年级·英语·任务型阅读Unit 4 After-School Activities
For Miller, an 80yearold man, it's a chance of a lifetime. Miller is a part of a group of around 60 Germans who are on a bus journey along the ancient Silk Road. About this journey, he says, “I have been deeply interes
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七年级·英语·书面表达Unit 4 After-School Activities
暑假就要来了，假如你们班就 “ 如何度过一个有意义的暑假 ” 这一话题展开了讨论，请你观察下图的讨论结果统计图表，根据所给提示和要求写一篇发言稿。 提示： (1)What do your classmates plan to do in their summer holiday? (2)Why do teenagers need to take part in social practice activities? 要求： (1) 发言
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七年级·英语·填空题Unit 4 After-School Activities
Learn English online. Join a funny and international club after class. Learn English ____ reading and communicating naturally. Join our Power English Club. Power English is more than a great lesson pack( 打包 ). It is also
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七年级·英语·填空题Unit 4 After-School Activities
( 素材选自 English in Mind Book 1) 学生是否应该在学校使用手机 Nowadays, mobile phone has been a necessary part of our life. Wherever you go, you can usually see people getting o 【 1 】 and playing their phones. However, at school, there a
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七年级·英语·单词拼写Unit 4 After-School Activities
(2020 原创 )Maybe I should cut off a f ________ of my activities to help my mother do the housework.
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七年级·英语·单词拼写Unit 4 After-School Activities
(2020 原创 )I really take p ________ in my father. He always helps others when they are in trouble.
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七年级·英语·填空题Unit 4 After-School Activities
(2020 原创 )There are four great ________ (invent) in China. They are printing, paper making, gunpowder and compass.
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七年级·英语·填空题Unit 4 After-School Activities
(2020 原创 )The Internet has been ________ (wide) used in our daily life. It has changed our life a lot.
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七年级·英语·连词成句Unit 5 I Love Learning English!
arrive in, Beijing, this, David, will, afternoon ____________________________________ .
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七年级·英语·连词成句Unit 5 I Love Learning English!
by himself, washes, Peter, his, often, clothes ____________________________________ .
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七年级·英语·连词成句Unit 5 I Love Learning English!
apples, there are, in, basket, the, three _____________________________________ .
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七年级·英语·连词成句Unit 5 I Love Learning English!
this, is, interesting, how, book ____________________________________ !
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七年级·英语·连词成句Unit 5 I Love Learning English!
this, can, solve, you, problem ____________________________________ .
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七年级·英语·填空题Unit 5 I Love Learning English!
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七年级·英语·填空题Unit 5 I Love Learning English!
March 21st is World Sleep Day. This year's slogan( 口号 )is “Healthy sleep, safe travel”. Its _____ is to let people know the importance of healthy sleep. Sleep is like food for the brain, and enough sleep helps the body a
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七年级·英语·任务型阅读Unit 6 Seasons
In our life, there are many messages that tell us to be healthy. We may make much effort to achieve this goal. But really, it doesn't have to be so hard. Simply going for a walk—especially if you do it regularly and outd
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七年级·英语·填空题Unit 6 Seasons
When I was a kid, new snow meant one thing for me: I could get to make snow ice cream with my families. As soon as enough snow had ______ on the ground, my mother would send my brothers, sisters and me out to _____ the n
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七年级·英语·连词成句Unit 7 Sports and Good Health
no, there is, student, in the classroom __________________________________________________________ .
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七年级·英语·连词成句Unit 7 Sports and Good Health
beautiful, the, how, is, sky __________________________________________________________ !
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