1.加plus

eg:Two plus two is four.二加二等于四

2.减minus

eg:Nine minus three is six.9减3等于6

3.乘multiply

eg:

(1)to multiply five by three.以三乘五

(2)3 multiplied by 5 is 15.三乘五等于十五.

4.除divide

eg:

(1)15 divided by 3 is 5.3除15等于5.

(2)Three will not divide into eleven.三除不尽十一.