加减乘除乘方英语讲解

1、加减乘除乘方英语讲解第一页，共14页。The ExpressionsThe Expressions add, plus, and minus, take (subtract).from. times, multiplied by , multiply.by. divided by, divided.by. Xpower（square, cube.）第二页，共14页。addition 加加3+4=？ How much is three plus four?第三页，共14页。3+4=7plus (prep.) add (v.)Three plus four is seven.Three and f

2、our makes seven.equal v./adj.Three and four is equal to seven.Three added to four equals seven.If you add 4 to 3，you get 7.Whats three plus four? Its seven.第四页，共14页。subtraction 减减106? How much is ten minus six?第五页，共14页。1064minus (prep), subtract (v.)Ten minus six is four.We also can use “takefrom”:T

3、ake (subtract) six from ten,and the remainder is four.(remainder n. 余下的部分)Six taken (subtracted) from ten is four.第六页，共14页。multiplication 乘乘 Times (prep.) or multiply（v.） 34? How much is three times four?第七页，共14页。3412 Three times four is twelve. Multiply three by four, we get twelve. Three multiplie

4、d by four makes twelve.第八页，共14页。division 除除155? How much is fifteen divided by five?第九页，共14页。1553 Fifteen divided by five is three. Fifteen divided by five equals/makes four. Divide fifteen by five, we get three.第十页，共14页。power 乘方乘方乘方、幂 power 二次方，平方 square 三次方，立方 cube 四次方 the power of four, the fourt

5、h power n次方 the power of n, the nth power第十一页，共14页。Example:Three to the 8th power（The 8th power of 3）3的8次方4 to the power of 3 is 4.4 的 3 次方是 4。第十二页，共14页。Some fractions 分数 three fourths; three quarters a half a/one quarter 1 one and a half 3 three and one fourth; three and one quarter第十三页，共14页。 Some examples: 一个半小时： one and a hal