加减乘除英语讲解整理课件.ppt

加、减、乘、除,The Expressions,addition,3+4=？How much is three plus four?,3+4=7,Three plus four is seven.Three and four make seven.equal v./adj.So,we can say:Three and four is equal to seven.Three added to four equals seven.Whats three plus four?Its seven.,subtraction,106?How much is ten minus six?,1064,Ten minus six is four.We also can use“takefrom”:Take six from ten,and the remainder is four.(remainder n.余下的部分),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!,