加减乘除英语讲解.ppt

加、减、乘、除,The Expressions,addition,2+4=？How much is two plus four?,用and,plus,addedto等词表示。24 6可译为：Twoandfourissix.Twoplusfourisequaltosix.Twoaddedtofourequalssix.Twoandfourmakessix.Twoplusfourwillbesix.Ifyouaddtwotofour,yougetsix.,3+4=7,Three plus four is seven.Three and four makes seven.equalSo,we can say:Three and four is equal to seven.Three added to four equals seven.Whats three plus four?Its seven.,subtraction,8-3?How much is ten minus six?,8-3=5,minus8-3=5可译为：Eightminusthreeisfive.Eightminusthreeisequaltofive.,multiplication,Time(v.)or multiply 34?How much is three times four?,3412,Three times four is twelve.Multiply three by four,we get twelve.Three multiplied by four makes twelve.,division,155?How much is fifteen divided by five?,1553,Fifteen divided by five is three.Fifteen divided by five equals/makes four.,Some fractions,three fourths;three quarters a half a/one quarter1 one and a half 3 three and one fourth;three and one quarter,Some examples:一个半小时：one and a half hours二又四分之三米：two and three-fourths meters五分之四英寸：four-fifths inch,Thank you!,