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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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You'd better______ (not turn) on the TV. You mom is sleeping.
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Are you going to tell your penfriend ____________ your school?
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Mum is out. I have to____________ my younger sister.
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I think we should__________ some money___________ the AIDS patients.
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____________will they make for the food festival?
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Don’t put _________ sugar in my coffee. Just a little, please.
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Tom doesn't feel_____________ today.
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- Could you_________________ the milk into the bottle? - Of course.
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We have developed a lot of habits, such as, eating habit, study habit, reading habit, etc. However, taking the time to develop a sleep habit is probably the last thing on your mind and some sleep (1)a______ simply can't
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After a serious disease(疾病),Raghu Makwana lost his legs. He had to walk with the support (支持)of his (1)h______. One day,Raghu and a few friends thought of (2)d______a small act of kindness. Raghu offers help to a lot of
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The electricity station in our community happened to be repaired last Saturday, so the workers cut off our electricity that day. We all thought that it must be a very (1)b______ day. Without electricity, we could do noth
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Imagine the situation. You are driving along a desert or on a mountain. You have no idea where you are. You passed the last house two hours ago. Then your car breaks down. It is night and it is cold. You have no mobile p
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Turkey is an important part of America traditional food. Here are some cool facts about the delicious food and the bird. ★ According to some Americans, the name turkey came from the _____ turkeys make when they are afrai
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It is Saturday morning. Carla and Jason set out the things they are going to sell because they want to use the money to help some poor people. Soon, friends and neighbours will come. Carla .and Jason have their first cus
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