加、减、乘、除 ＋－×÷ The Expressions   ＋ add    plus    and    － subtract    minus   × multiply    ÷ divide  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.  What’s three plus four? It’s seven. subtraction  10－6＝?  How much is ten minus six? 10－6＝4 Ten minus six is four. We also can use “take…from…”: Take six from ten,and the remainder is four. (remainder  n. 余下的部分) multiplication  Time (v.) or multiply   3×4＝? How much is three times four?  3×4＝12 Three times four is twelve. Multiply three by four, we get twelve. Three multiplied by four makes twelve. division  15÷5＝?  How much is fifteen divided by five? 15÷5＝3 Fifteen divided by five is three. Fifteen divided by five equals/makes four. Some fractions ?    three fourths; three quarters  ?    a half ?    a/one quarter 1?  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! * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
加减乘除英语讲解.ppt