七年级英语Theworldofnumbers.pptx

#How many candies are there in my box?Chapter 4 The world of numbersListening and Speaking#The oil costs ninety-eight point eight yuan.98.8point#Your temperature is thirty-seven centigrade(摄氏摄氏)degree（度）（度）.37centigrade degree#My home number is two five six one six eight nine seven.2561 6897#Its nine past ten now.#50%The discount(折扣折扣)is fifty percent.a half#even百分数百分数degree分数分数odd小数的小数的度数度数percentage奇数的奇数的偶数的偶数的decimalfraction#1.2.603.4.5.6.an even numbera percentagea number showing degreean odd numbera decimal numbera fraction#A Now try a quiz about numbers.Listen and draw a circle round the right answer.1 A.80 B.49 C.172 A.2.66 B.26%C.2/63 A.75 B.75%C.754 A.1/8 B.0.75 C.335 A.56 B.65 C.666 A.90 B.90%C.1/97 A.2565 3881 B.2566 2881 C.2565 28818 A.1.8%B.80%C.18%9 A.$5,000 B.$50,000 C.$15,00010 A.30.5 B.13.5 C.35#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 the way to his friends house.#In the Shopping MallMr.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(找零找零)?A.100-(58+30)=12B.100+58+30=188C.100-58+30=72Formulas(算式算式):#Going to the airportThe flight（航班）（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=7:28B.7:58+30=8:28C.7:58+30=7:88Formulas(算式算式):#On the planeThere 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 taller than her.Then how tall is the girl?A.178+40=218B.178-40=138Formulas(算式算式):#In friends houseThere are 12 pieces of cakes in Mr.Lis house.They should be divided among 2 kids（小孩）（小孩）and 4 other people.Then how many pieces of cakes each person can get?A.122+4=10B.12(2+4)=2 C.12(2+4)=2Formulas(算式算式):#B listen to the conversations(对话对话)and write down the formulas(算式算式)and answers below the pictures.1.2.3.4.5.6.0.53+2=3.56:58+30=7:28163+12=175124=384=3250-23=27Go to ppt 23#1.0.53+2=3.51 GIRL Id like to buy three pencils and one ballpoint pen（圆珠笔）（圆珠笔）.How much are they?WOMAN 0.5 yuan for one pencil and 2 yuan for one ballpoint pen.QUESTION How much should the girl pay?Back#2.50-23=272 WOMAN Here is 50 yuan.MAN Thats twenty three yuan for the book,and here is your change(找零找零).QUESTION What is the change?Back#3.84=323 GIRL How many pieces of chocolate 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#4.163+12=1754 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#5.6:58+30=7:285 WOMAN The flight(航班航班)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#6.124=36 MUM I bought twelve apples.DAD Well,divide them among the four kids(小孩小孩).QUESTION How many apples does each kid get?Back#There is a new grocery(杂货店杂货店)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 example:#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:￥1.5a pen:￥10.5a rubber:￥1.5a candy:￥2a ballpoint pen:￥8a birthday card:￥3#Genius is 1%inspiration and 99%perspiration.Thomas Edison A man is like a fraction whose numerator(分子分子)is what he is and whose denominator(分母分母)is what he thinks of himself.The larger the denominator,the smaller the fraction.Leo Tolstoy 天才等于天才等于1%的智慧和的智慧和99%的汗水。的汗水。爱迪生爱迪生一个人就像一个分数，他的实际才能好比分子，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，分数值而他对自己的估计好比分母，分母越大，分数值越小。越小。列夫列夫托尔斯泰托尔斯泰#1.Learn the following new words by heart:odd,even,decimal,fraction,degree,percentage,change,flight,kid.2.Exercise book P43-44.