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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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八年级·英语·填空题Unit 6 Nobody wins (Ⅰ)

Complete the sentences with the given words in their proper forms（用括号中所给单词的适当形式完成下列句子）：【1】The school library is on the _________ floor of the new building. （two）【2】We are all working hard to make our country strong and

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八年级·英语·填空题Unit 6 Nobody wins (Ⅰ)

A. better B. used C. idea D. the same E. different F. when G. up to Soon computers and other machines will be able to remember you by looking at your eyes! The programme works because everyone’s eyes are 【 1 】 . So in th

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八年级·英语·选择题Unit 6 Nobody wins (Ⅰ)

— Would you like to play football with us after school? —_________

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八年级·英语·选择题Unit 6 Nobody wins (Ⅰ)

Which of the following words matches the sound /lɒst/？（）

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九年级上·英语·阅读理解Unit 1 Wise men in history

根据表格内容，选择正确答案。 J&M Music Store ﹒Rock, pop and country music ﹒Buy CDs new or used ﹒Listen before you buy ﹒Guitar lessons offered Peth Market ﹒Fresh fruit and vegetables ﹒Open Friday to Sunday mornings ﹒Free ice cream for

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九年级上·英语·阅读理解Unit 1 Wise men in history

根据短文内容，选择正确答案。 The brain is the boss of the body. Your eyes, ears, nose, and skin tell your brain what is going on around you. Other parts of your body tell your brain what is going on inside you. Your brain takes in the

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九年级上·英语·填空题Unit 1 Wise men in history

完形填空 Once a king loved music so much that he searched the world for the best instrument.（One day. a magic man （1） the king a harp(竖琴). The king took it to the palace, but （2） he played it, the harp sounded terrible. Many

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九年级上·英语·填空题Unit 1 Wise men in history

根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。 King Akbar was in the habit of putting riddles and puzzles to his people. He often asked （1） which were strange. His people had to use words in a （2） way to answer these questions. Once Akba

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九年级上·英语·填空题Unit 1 Wise men in history

The teacher told us (not go) out at night.

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九年级上·英语·填空题Unit 1 Wise men in history

You never read his books, ? （完成反意疑问句。）

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九年级上·英语·填空题Unit 1 Wise men in history

Some computers (steal)last night.

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九年级上·英语·填空题Unit 1 Wise men in history

There is nothing in the box, ? （完成反意疑问句。）