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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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Once a wicked wizard(邪恶的巫师) was on a visit to a city and stole the tongues(舌头) from the sleeping people and cast a spell(施一个咒语) on them.The spell meant that these tongues could only say bad things about people.Then the w
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阅读短文,然后根据内容回答所提问题. Many inventions were created by accident.The inventors were trying to make something completely different.Here is one example. Name of the inventor:Percy LeBaron Spencer Nationality:American Invention:
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Once upon a time,there was a very lazy man who would always look for an easier way to feed himself.One day while he was looking for something to eat,he saw a fruit farm.He looked around and didn\’t see anyone,so he decid
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Long long ago,there was a king who liked to write stories.He thought the stories he wrote wee very good.He showed them to some people.Although people didn\’t like the stories ,they were afraid of the king.So they said hi
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让我们一起去旅行,感受大自然的美丽. Let\’s take a trip ______ and feel the beauty of nature.
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The parents live_____their children.( )
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Don\’t ________ us, Miss Yang. We can help each other. We are good friends.( )
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A:Good morning,sir.Welcome to Suning Appliances Mall. What can I do for you? B:(1)______. A:A Smartphone?Oh,we have many different types of smartphones.You can have a look first. B:This one looks cool.Can it be used for
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I love to visit my grandma\’s farm.I visit it every week (周) .I\’m happy to go there . I love to work (工作)on Grandma\’s farm.I can see the cats and the dogs.I can feed (喂)animals and pick up (捡起)eggs. I love the dogs and
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That cold January night,I was growing sick of my life in San Francisco.There I was walking home at 1 am in the morning after a tiring practice at the theatre.With opening night only a week away,I was still learning my li
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Yuan Ke works as a food deliveryman(外卖员) in Changsha,Hunan Province.He is a little different from most other food deliverymen.When busy lunchtime comes,Yuan doesn\’t pick up paid orders.Instead,he goes to a community can
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Name Age Looks Clothes Favorite Food Du Li 13 black hair a small nose big eyes a pink dress white shoes fish Sandy 12 a round face big eyes a small mouth a red skirt a green shirt hamburgers David 13 brown hair a big nos
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Using a dictionary ①It is very important for us to use a dictionary when we study English. ②When we read some news or passages in English,we often meet some new words.We can look them up in the dictionary so that we can
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Unlike kids in the city,kids in some rural villages (乡村) find it hard to get books to read. Li Kaixuan,the founder (创立者) of HAVE Library,wants to help those kids.He is working to build village libraries.With his hard wor
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How can you get to know your neighbors(邻居)?Here are some ways for you. Going outside is an easy way.Sit in front of the door every day,and finally someone will say hello to you.If you feel bored just sitting there,you ca
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Here is much about Chinese medicine on the Internet.( )
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Welcome to Long River School! In the coming months,you may be busy with your studies.Joining a school club is a good way to relax.It\’s important to keep a balance between work and play! ※ Which one should I join? If you
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The students in my school play handball a lot.During the first break and second break,many students get out of the (1)______ to play handball on the playground.Usually there are four students playing in each (2)______ wh
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Do you know how blueberries(蓝莓) grow?They grow on bushes(灌木).Each blueberry is small and round.Many blueberries grow on one bush. At first,the blueberries are green.The green berries are not ready to eat.They need a lot
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To our surprise,the robot communicate with us in our local language.( )
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