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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
Because of the spread of the virus, the Olympic Games may be c________ this year.
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根据要求完成句子。每空一词,含缩略词。 【 1 】 毫无疑问,中国人最了解茶的本质。 ____________ ____________ , Chinese understand the nature of tea best. 【 2 】 这所学校现今共有 3341 名学生。 There are 3341 students in the school ____________ ____________ now. 【 3 】 We may
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根据下列句子中所给汉语注释,在答题卡相应的位置上写出空缺处各单词的正确形式。(每空只写一词) 【1】My bag is very heavy. It is too heavy to _______ (举起). 【2】People grow rice, wheat and______ (棉花) in my hometown. 【3】If you feel _______ (瞌睡的), please lie down for a while
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____ ill,I can't go to school today.( )
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-Would you mind taking some photos for us? -Certainly not.It’s a piece of cake. ( )
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My aunt had a pig of a day yesterday.She lost her purse and mobile phone on the street.( )
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We will have to set off ____ to avoid the heavy traffic tomorrow morning.( )
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We can shop without______out of our houses.( )
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—Peng Liyuan is a beautiful and popular singer. —And now she is also the First Lady in China.( )
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-How soon will Dad be back? -Maybe _____.( )
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Helen does well in her schoolwork.She studies hard _________.( )
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-We didn't go to South Hill because of ____________. -What a pity!( )
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The local community centre is open Monday to Saturday.( )
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It was not nice of you to play a trick ______ your younger sister.( )
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Iphone products are becoming more and more popular in China ______ many reasons.( )
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John is always praised ________ one of the top students _______ his efforts.( )
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Guo Jingming is famous his movie Tiny Times.( )
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The Blacks usually have milk and bread breakfast.( )
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-Though my aunt Annie has retired(退休),she still learns French every day. -______( )
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Diana used to to work,but now she is used to because the road is crowded and she wants to keep fit.( )
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