| 符号 | 标记/描述 |
|---|---|
| ＋ | 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 e |
| ≈ | is approximately equal to 约等于号 |
| ＜ | less than sign 小于号 |
| ＞ | more than or greater than sign |
| ≮ | 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 |
| ≥ | is more than or equal to 大于或等于 |
| ％ | per cent 百分号 |
| ‰ | per mill 千分号 |
| ∞ | 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 |
| △ | triangle 三角形 |
| ⊥ | perpendicular to 垂直于 |
| ∪ | union of 并，合集 |
| ∩ | intersection of 交，通集 |
| ∫ | the integral of 积分 |
| ∑ | (sigma)summation of 总和 |
| ° | degree 度 |
| ′ | minute 分 |
| ″ | second 秒 |
| ＃ | number #号 |
| ℃ | Celsius system 摄氏度 |
| ＠ | at 艾特 |
| π | 圆周率 |