加减乘除等符号大全中英对照，在英语中的用法

+  plus 加号；正号 
-  minus 减号；负号 
± plus or minus 正负号 
× is multiplied by 乘号 
÷ is divided by 除号 
= is equal to 等于号 
≠ is not equal to 不等于号 
≡ is equivalent to 全等于号 
≌ is equal to or approximately equal to 等于或约等于号 
≈ is approximately equal to 约等于号 
＜ is less than 小于号 
＞ is more than 大于号 
≮ is not less than 不小于号 
≯ is not more than 不大于号 
≤ is less than or equal to 小于或等于号 
≥ is more than or equal to 大于或等于号 
%  per cent 百分之… 
‰ per mill 千分之… 
∞ infinity 无限大号 
∝ varies as 与…成比例 
√ (square) root 平方根 
∵ since; because 因为 
∴ hence 所以 
∷ equals, as (proportion) 等于，成比例 
∠ angle 角 
⌒ semicircle 半圆 
⊙ circle 圆 
○ circumference 圆周 
π pi 圆周率 
△ triangle 三角形 
⊥ perpendicular to 垂直于 
∪ union of 并，合集 
∩ intersection of 交，通集 
∫ the integral of …的积分 
∑ (sigma) summation of 总和 
° degree 度 
′ minute 分 
〃 second 秒 
℃ Celsius system 摄氏度 

{ open brace, open curly 左花括号 
} close brace, close curly 右花括号 
( open parenthesis, open paren 左圆括号 
) close parenthesis, close paren 右圆括号 
() brakets/ parentheses 括号 
[ open bracket 左方括号 
] close bracket 右方括号 
[] square brackets 方括号 
. period, dot 句号，点 
| vertical bar, vertical virgule 竖线 
& ampersand, and, reference, ref 和，引用 
* asterisk, multiply, star, pointer 星号，乘号，星，指针 
/ slash, divide, oblique 斜线，斜杠，除号 
// slash-slash, comment 双斜线，注释符 
# pound 井号 
\ backslash, sometimes escape 反斜线转义符，有时表示转义符或续行符 
~ tilde 波浪符 
. full stop 句号 
, comma 逗号 
: colon 冒号 
; semicolon 分号 
? question mark 问号 
! exclamation mark (英式英语) exclamation point (美式英语) 
' apostrophe 撇号 
- hyphen 连字号 
-- dash 破折号 
... dots/ ellipsis 省略号 
" single quotation marks 单引号 
"" double quotation marks 双引号 
‖ parallel 双线号 
& ampersand = and 
～ swung dash 代字号 
§ section; division 分节号 
→ arrow 箭号；参见号

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。