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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|}=
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It's known that ______ created by Mo Yan are well-received,but do you know how much ______ he has done before they come out.( )
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There is some _________ in the kitchen.( )
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You should be careful when ______ (控制) the machine.
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The Sahara Desert in Northern Africa is the largest hot desert in the world.It is about 1,800km from the north to the south and about 4,800 km from the east to the west.Temperatures can reach 58℃ in the daytime and can f
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根据括号内所给的中文提示,正确拼写单词,并将答案填写在答题卡对应的横线上。 【 1 】 It's a _________ ( 遗憾 ) that you can' t attend my birthday party. 【 2 】 The factory plans to _________ ( 生产 )2000 cars a year. 【 3 】 If you go to a foreign country , you must h
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根据句意,用括号中所给单词的正确形式填空,并将答案填写在答题卡对应的横线上。 【 1 】 Each of the students is _________ (ask) to take a dictionary to the English class. 【 2 】 It is very important to know how to ask for help _________ (polite). 【 3 】 The teacher
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根据句意及所给中文提示或英文解释,写出句中所缺单词,每空限填一个单词。 【 1 】 1 don't need a double room. A __________ (单人的) room is OK. 【 2 】 My father will go to the __________ (音乐会) with me this evening. 【 3 】 There are lots of huge __________ (石头) in t
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晚上的贵阳甲秀楼真美啊! ____________ Jiaxiulou in Guiyang looks at night!
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政府已经在我们的城市里建了很多卫生间. The government has built a lot of ______ in our city.
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单词拼写 根据中文或首字母提示完成下列单词的拼写,使句意完整、正确。每空一词。 【 1 】 Which do you ______ ( 更喜欢 ), classical music or pop music? 【 2 】 He was the only little boy at the _______ ( 野炊 ). 【 3 】 Parents should give teenagers some ______ ( 机会 ) to m
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A:Mrs.Black,you really help children a lot.(1)______ B:Sure.Children often call me and ask for some advice about how to solve their problems. A:(2)______ B:Many can\’t decide when to study and when to play.I think they s
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____________ news!We all feel excited.( )
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You feed me when I'm hungry. You keep water in my dish. You let me sleep on anything, or in any place I wish. You sometimes let me lick(舔)your hands, or even lick your lace, though(虽然)I often lick myself in some dirty pl
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The idea for the book H arry Potter and the Philosopher's Stone came to Joanne Kathleen Rowling in 1990.It took her seven years to finish writing it.During those seven years she had a number of jobs,including one job as
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