+ plus 加號;正號app
- minus 減號;負號less
± plus or minus 正負號curl
× is multiplied by 乘號ide
÷ is divided by 除號post
= is equal to 等於號ui
≠ is not equal to 不等於號url
≡ is equivalent to 全等於號指針
≌ is equal to or approximately equal to 等於或約等於號three
≈ is approximately equal to 約等於號ip
< is less than 小於號
> is more than 大於號
≮ is not less than 不小於號
≯ is not more than 不大於號
≤ is less than or equal to 小於或等於號
≥ is more than or equal to 大於或等於號
% per cent 百分之…
‰ per mill 千分之…
∞ infinity 無限大號
∝ varies as 與…成比例
√ (square) root 平方根
∵ since; because 由於
∴ hence 因此
∷ equals, as (proportion) 等於,成比例
∠ angle 角
⌒ semicircle 半圓
⊙ circle 圓
○ circumference 圓周
π pi 圓周率
△ triangle 三角形
⊥ perpendicular to 垂直於
∪ union of 並,合集
∩ intersection of 交,通集
∫ the integral of …的積分
∑ (sigma) summation of 總和
° degree 度
′ minute 分
〃 second 秒
℃ Celsius system 攝氏度
{ open brace, open curly 左花括號
} close brace, close curly 右花括號
( open parenthesis, open paren 左圓括號
) close parenthesis, close paren 右圓括號
() brakets/ parentheses 括號
[ open bracket 左方括號
] close bracket 右方括號
[] square brackets 方括號
. period, dot 句號,點
| vertical bar, vertical virgule 豎線
& ampersand, and, reference, ref 和,引用
* asterisk, multiply, star, pointer 星號,乘號,星,指針
/ slash, divide, oblique 斜線,斜槓,除號
// slash-slash, comment 雙斜線,註釋符
# pound 井號
\ backslash, sometimes escape 反斜線轉義符,有時表示轉義符或續行符
~ tilde 波浪符
. full stop 句號
, comma 逗號
: colon 冒號
; semicolon 分號
? question mark 問號
! exclamation mark (英式英語) exclamation point (美式英語)
' apostrophe 撇號
- hyphen 連字號
-- dash 破折號
... dots/ ellipsis 省略號
" single quotation marks 單引號
"" double quotation marks 雙引號
‖ parallel 雙線號
& ampersand = and
~ swung dash 代字號
§ section; division 分節號
→ arrow 箭號;參見號
加減乘除表示法
1. 「加」用plus,and或add表示;「等於」用is,make,equal等詞表示。
2+3=? 可表示爲: 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.
二加三等於五
2. 「減」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.
十減去六等於四
3. 「乘」用time(動詞)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.
三乘以四等於十二
4. 「除」用divide的過去分詞形式表示
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.
十六除以四等於四。