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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
swim;quiet;get;by;great;enjoy;we;vacation;and;until Last summer,I traveled with my family to the Hawkesbury River in Australia.It was one of the most unforgettable summer(1)______in my life. Staying by the river helped u
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Lisa is ten years old.She is handicapped(残疾的).She could not dress herself or feed herself until a year ago.Her parents loved her,but they treated (对待) her like a baby. Mr.Chen has a daughter and a son.They live far from
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It\’s too dark in the room.He can hardly see anything,_____?( )
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Robin came to work in our factory ______(几个) months ago.
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-What\’s the woman with a ponytail like? -She doesn\’t talk much, ____________.( )
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—Let\’s play volleyball this afternoon. —Sorry,I want my aunt.( )
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---Could you tell me when Mark Twain\’s first short story . ---Sorry,I haven\’t heard of it.( )
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I\’m going to buy a big house for my parents when I ______ enough money.( )
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Granny______glasses when she reads newspapers.( )
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My grandfather ______ movies on TV every evening.
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Complete the following sentences as required (根据所给要求完成下列句子 , 每题空格限填一词) 【 1 】 My cousin Jack watches TV at the weekend. (改为否定句) My cousin Jack ______ ______ TV at the weekend. 【 2 】 Kitty rarely went to bed after 11 o’clo
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Fill in the blanks with the given verbs 【1】By the end of last term, I _____reading ten books. (finish) 【2】I used to see them _____in the playground.( play) 【3】Comrade Li Dazhao ____into prison in 1927.( put) 【4】Yesterday
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—What\’s the matter? —My feet are hurting badly.The new shoes don\’t ________ me.( )
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Listen!The secretary _______ the phone.( )
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Don\’t make any noise here.My mother ______ (lie) in the bed and sleeping.
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大家在比赛前务必要做好热身. Everyone must make sure to ______before the match.
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keep,it,helps,to,healthy ______.
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How many backpacks have you owned since you went to school?Backpacks(1)______(become) common and popular among students in the past 30 years.If your backpacks become old,will you just treat them as rubbish and throw them
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My name is Li Hong.Li Jia (1)______ (be) my sister.We are in the same school,but in (2)______ (difference) grades.On weekdays,we ride our bikes to school (3)______ seven o\’clock.And then we have breakfast at the school
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My father is much ______(着迷的) about reading the books by the famous writers.
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