+ plus 加號(hào)；正號(hào)

　　- minus 減號(hào)；負(fù)號(hào)

　　± plus or minus 正負(fù)號(hào)

　　× is multiplied by 乘號(hào)

　　÷ is divided by 除號(hào)

　　＝ is equal to 等于號(hào)

　　≠ is not equal to 不等于號(hào)

　　≡ is equivalent to 全等于號(hào)

　　≌ is equal to or approximately equal to 等于或約等于號(hào)

　　≈ is approximately equal to 約等于號(hào)

　　＜ is less than 小于號(hào)

　　＞ is more than 大于號(hào)

　　≮ is not less than 不小于號(hào)

　　≯ is not more than 不大于號(hào)

　　≤ is less than or equal to 小于或等于號(hào)

　　≥ is more than or equal to 大于或等于號(hào)

　　% per cent 百分之...

　　‰ per mill 千分之...

　　∞ infinity 無限大號(hào)

　　∝ varies as 與...成比例

　　√ (square) root 平方根

　　∵ since; because 因?yàn)?

　　∴ hence 所以

　　∷ equals, as (proportion) 等于，成比例

　　∠ angle 角

　　⌒ semicircle 半圓

　　⊙ circle 圓

　　○ circumference 圓周

　　π pi 圓周率

　　△ triangle 三角形