+　 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 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…
‰　permill　千分之…
∞　infinity　無限大號(hào)
√　(square) root　平方根
∵　since; because　因?yàn)?br />∴　hence　所以
∠　angle　角
⌒　semicircle　半圓
⊙　circle　圓
○　circumference　圓周
π　pi 圓周率
△　triangle　三角形
⊥　perpendicularto　垂直于
∪　union of　并，合集
∩　intersection of交，通集
∑　(sigma) summationof　總和
°　degree　度
′　minute　分
″　second　秒
{　open brace, open curly　左花括號(hào)
}　close brace, close curly　右花括號(hào)
(　open parenthesis, openparen　左圓括號(hào)(parenthesis插入成分,括弧)　close parenthesis, closeparen　右圓括號(hào)
() brakets/ parentheses　括號(hào)
[　open bracket 左方括號(hào)([pl. ]括號(hào)({ }, (), []))
]　close bracket 右方括號(hào)
[] square brackets　方括號(hào)
.　period,dot　句號(hào)，點(diǎn)
|　vertical bar, vertical virgule　豎線
&　ampersand, and, reference, ref　和，引用
*　asterisk, multiply, star,pointer　星號(hào)，乘號(hào)，星，指針
/　slash, divide, oblique 斜線，斜杠，除號(hào)
//　slash-slash, comment 雙斜線，注釋符
#　pound　井號(hào)？
　backslash, sometimesescape　反斜線轉(zhuǎn)義符，有時(shí)表示轉(zhuǎn)義符或續(xù)行符
.　full stop　句號(hào)
,　comma　逗號(hào)
:　colon　冒號(hào)
;　semicolon　分號(hào)
?　question mark　問號(hào)
!　exclamation mark (英式英語) exclamation point (美式英語)
'　apostrophe　撇號(hào)
-　hyphen　連字號(hào)
-- dash 破折號(hào)
...　dots/ ellipsis　省略號(hào)
"　single quotation marks 單引號(hào)
""　double quotation marks 雙引號(hào)
‖ parallel 雙線號(hào)
&　ampersand =and

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