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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
In China, the color red is the ________of good luck.
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Look ! The woman over there is our teacher. She teaches _______English.
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I usually have _______egg and some bread for breakfast.
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—Nice to meet you. —____________
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完成句子 【 1 】 昨天下午放学的时候天正下着大雪 。 ( snow ) ____________________________________ when school was over yesterday afternoon. 【 2 】 无论我走到哪里 , 没有什么能把我和我的祖国分离 。 ( separate ) Wherever I go, nothing can make me ______________________
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What are you holding in your hand while you are taking the examination? Right. A pen. Though it is small, the pen has changed the history, improved the trade of countries, recorded events, carried news, and done far more
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In the state of Qin ( 秦国 ) , there was a man called Shang Yang ( 商鞅 ). He was a statesman ( 政治家 ) and worked out many reforms( 改革 ) for the state, like paying more attention to farming and giving rewards ( 报酬 ) to soldie
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I'm sure you all know how important recycling is. Recycling is when you take old things and turn them into new things. It sounds like magic. But it's actually very scientific. Material The first thing you have to do is t
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For Pineda, it was a long way to succeed. His story began in El Salvador; where he was born with something wrong with his mouth. He had great _______ in speaking. At age 2, his family’s house burned down. Pineda was hurt
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--1 really want to watch Operation Red Sea(红海行动). Could you tell me ________ ? -- Sure. It'll be on show at Town Cinema.
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—Is the sweater made ________ cotton? — Yes. It ________so soft and I like it very much.
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—He hardly had friends because he used to be mean. —But now he has changed a lot. He treats others and is popular.
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—Shall we ________the things we don' t use ? —No.We can ________to the people in need.
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— Your sister _ your mother very much. — Many people regard them as sisters when they hang out together.
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--- More and more foreigners come to visit the Great Wall. ---That's true. It is the____of China.
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---The beautiful lady with glasses over there looks like our English teacher. ---It be her. She has gone abroad.
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—Shall I help you go the street, Grandpa? —No, thanks. I can manage it myself.
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—Would you like to go to the city park? — I’m not sure. If Mike doesn’t, _________.
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- It's useless to regret what has been done. Don't make those mistakes again 一I won't. That's a(n) _____
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—I like the ________ named The World of English very much. — Me, too. I have read it for many years.
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