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＋

加號/正號

plus

％

百分之

per cent (or percent)

－

減號/負號

minus

‰

千分之

per mill (or mil)

×

乘號

is multiplied by

≡

全等號

is equivalent to

¸

除號

is divided by

≌

約等於

is approximately equal to

±

正負號

plus or minus

≈

約等於

is approximately equal to

＝

等號

is equal to

∝

與…成比例

varies as

≠

不等號

is not equal to

∞

無限大

infinity

＜

小於

is less than

≤

小於等於

is less than or equal to;
is no more than

≮

不小於

is not less than

＞

大於

is more than

≥

大於等於

is more than or equal to;
is no less than

≯

不大於

is not more than

∵

因為

since; because

°

度

degree

∴

所以

hence

′

分

minute

π

圓周率

pi

″

秒

second

√

平方根

(square) root

℃

攝氏

centigrade

∫

積分

integral of

°F

華氏

(degree) Fahrenheit

∑

總和

summation of

＆

以及

and (or ampersand)

∠

角

angle

f(a)

a 的函式

the function of a

⌒

半圓

semicircle

$

美元

dollar

⊙

圓

circle

⊥

垂直

is perpendicular to

○

圓周

circumference

∪

合集

union of

△

三角形

triangle

∩

交集

intersection of