加减乘除表示法
1、“加”用 plus，and 或 add 表示；“等于”用 is，make，equal 等词表示。
2+3=? 可表示为：
How much is two plus three?
2+3=5 Two plus three is five．
Two and three is equal to five．
Two and three make five．
Two added to three equals five．
If we add two to/and three, we get five．
二加三等于五
2、“减”用 minus 或 take from 表示
10－6＝? How much is ten minus six?
10-6=4 Ten minus six is four．
Take six from ten and the remainder is four.
Six (taken) from ten is four．
十减去六等于四
3、 “乘”用 time（动词）或 multiply
表示 3X4＝?
How much is three times four? 3X4=12
Three times four is/are twelve．
Multiply three by four，we get twelve．
Three multiplied by four makes twelve．
三乘以四等于十二
4、 “除”用 divide 的过去分词形式表示
16÷4=?
How much is sixteen divided by four?
16÷4＝4
Sixteen divided by four is four．
Sixteen divided by four equals/gives/makes four．
十六除以四等于四。
