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1、单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,How many candies are there in my box?,1,Chapter 4 The world of numbers,Listening and Speaking,2,The oil costs,ninety-eight point eight,yuan.,Where can we see numbers in everyday life?,98.8,point,3,Your temperature is,thirty-seven centigrade(,摄氏,)degree,（度
2、37,centigrade degree,4,My home number is,two five six one six eight nine seven.,2561 6897,5,Its,nine past ten,now.,6,50%,The discount(,折扣,)is,fifty percent.,a half,7,Word Competition单词竞猜,even,百分数,degree,分数,odd,小数的,度数,percentage,奇数的,偶数的,decimal,fraction,8,Which one of these is.?,1.,70,2.,60,3.,4.
3、0.7,5.,6.,an,even,number,a,percentage,a number showing,degree,an,odd,number,a,decimal,number,a,fraction,9,A Now try a quiz about numbers.Listen and draw,a circle,round the right answer.,A.,80 B.49 C.17,A.2.66 B.26%C.2/6,A.,75 B.75%C.75,A.1/8 B.0.75 C.33,A.56 B.65 C.66,A.90 B.90%C.1/9,A.2565 3881 B.
4、2566 2881 C.2565 2881,A.1.8%B.80%C.18%,A.$5,000 B.$50,000 C.$15,000,A.30.5 B.13.5 C.35,10,Could you help him?,One of Mr.Lis friends in Shanghai will have a birthday party.Mr.Li wants to,buy a present,and goes to meet him,by plane,.But,he,comes across(,遇到,),four,mathematical difficulties,（数学难题）,on th
5、e way to his friends house.,Calculations,11,In the Shopping Mall,Mr.Li wants to buy a book and a pen.The book costs,58 yuan,and the pen costs,30 yuan,.He gives the seller,100 yuan,.What is the,change(,找零,),?,A.100-(58+30)=12,B.100+58+30=188,C.100-58+30=72,Formulas(,算式,):,12,Going to the airport,The,
6、flight,（航班）,for shanghai will leave in,30 minutes,and its,7:58(two to eight),now.When will the plane leave?,A.7:58-30=7:28,B.7:58+30=8:28,C.7:58+30=7:88,Formulas(,算式,):,13,On the plane,There is a girl sitting next to Mr.Li on the plane.Mr.Li is,178 cm tall,.And the girl tells Mr.Li that he is,40 cm
7、taller than,her.Then how tall is the girl?,A.178+40=218,B.178-40=138,Formulas(,算式,):,14,In friends house,There are,12 pieces,of cakes in Mr.Lis house.They should be,divided among 2,kid,s,（小孩）,and,4,other people.Then how many pieces of cakes each person can get?,122+4=10,B.12(2+4)=2,C.12(2+4)=2,Formu
8、las(,算式,):,15,B listen to the conversations(,对话,),and write down the formulas(,算式,)and answers below the pictures.,1.,2.,3.,4.,5.,6.,0.53+2=3.5,6:58+30=7:28,163+12=175,124=3,84=32,50-23=27,Go to,ppt,23,16,1.,0.53+2=3.5,1 GIRL Id like to buy three pencils and one,ballpoint pen,（圆珠笔）,.How much are the
9、y?,WOMAN 0.5 yuan for one pencil and 2 yuan for one ballpoint pen.,QUESTION How much should the girl pay?,Back,17,2.,50-23=27,2 WOMAN Here is 50 yuan.,MAN Thats twenty three yuan for the book,and here is your,change(,找零,),.,QUESTION What is the change?,Back,18,3.,84=32,3 GIRL How many pieces of choc
10、olate are there in the box?,WOMAN Eight.,GIRL Id like to take four boxes.,QUESTION How many pieces of chocolate does the girl want to buy?,Back,19,4.,163+12=175,4 BOY How tall are you?,GIRL I am 163 cm tall.,BOY Well,I am 12 cm taller than you.,QUESTION How tall is the boy?,Back,20,5.,6:58+30=7:28,5
11、 WOMAN The,flight(,航班,),for Beijing will leave in 30 minutes.,MAN Whats the time now?,WOMAN Its,two to seven(6:58),.,QUESTION When will the plane leave?,Back,21,6.,124=3,6 MUM I bought twelve apples.,DAD Well,divide them among the four,kids(,小孩,),.,QUESTION How many apples does each kid get?,Back,22
12、There is,a new grocery,(,杂货店,),opened near our school.You want to have a look and buy something.,Please work in pairs and make a dialogue.,A:Can,I,help you?B:Yes,Id like to buy,2 notebooks,.,A:,1.5,yuan for,one.,B:So they cost 3 yuan.Here is,5,yuan.A:Thank you,and,here is,2,yuan for the change.,For
13、 example:,Pair work,23,A:Can,I,help you?B:Yes,Id like to buy,2 notebooks,.,A:,1.5,yuan for,one.,B:So they cost,3,yuan.Here is,5,yuan.A:Thank you,and,here is,2,yuan for the change.,For example:,a notebook:,￥,1.5,a pen:,￥,10.5,a rubber:,￥,1.5,a candy:,￥,2,a ballpoint pen:,￥,8,a birthday card:,￥,3,24,G
14、enius is,1%,inspiration and,99%,perspiration.,Thomas Edison,A man is like a,fraction,whose numerator(,分子,)is what he is and whose denominator(,分母,)is what he thinks of himself.The larger the denominator,the smaller the,fraction,.Leo Tolstoy,天才等于,1%,的智慧和,99%,的汗水。,爱迪生,一个人就像一个分数，他的实际才能好比分子，而他对自己的估计好比分母，分母越大，分数值越小。,列夫,托尔斯泰,Proverbs about numbers,25,1.Learn the following new words by heart:,odd,even,decimal,fraction,degree,percentage,change,flight,kid,.,2.Exercise book P43-44.,homework,26,
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