| + | addition, plus, positive - |
| subtraction, minus, negative - | |
| plus or minus (minus or plus) - |
 
| multiplication sign, multiplied by - , |
| /
| division, divided by - , |
| a/b | a divided by b - a b |
| : | divided by, ratio sign - ; |
| :: | equals; as - |
| < | less than - |
| not less than - |
| > | greater than - |
| not greater than - |
|
| approximately equal - |
| ∽ | similar to - |
| = | equals - |
, 
| not equal to - |
| = | approaches - |
| ∼ | difference - |
| infinity - |
| Therefore - |
| since, because - |
| square root - |
| cube root - |
| n th root - n - |
| equal to or less than - |
|
| equal to or greater than - |
| an | the n th power of a - a n - |
| a1 | a sub 1 - a |
| an | a sub n - a n - |
| angle - |
|
| perpendicular to - |
| || | parallel to - |
 
| common logarithm, or Briggsian logarithm - |
 
| natural logarithm, or hyperbolic logarithm, or Naperian logarithm - |
| e base | (2.718) of natural systems of logarithms - . |
| sin | sine - (sin) |
| cos | cosine - (cos) |
| tan | tangent - (tg) |
| ctn cot | Cotangent - (ctg) |
| sec | secant - (sec) |
| csc | cosecant - (cosec) |
| vers | versine, versed sine - - |
| covers | coversine, coversed sine - - |
| sin-1 | antisine - (arcsin) |
| cos-1 | Anticosine - (arccos) |
| sinh | hyperbolic sine - (sh) |
| cosh | hyperbolic cosine - (ch) |
| tanh | hyperbolic tangent - (th) |
| f(x) (x) | function of x - x |
| increment of x - x |
| summation of - |
| integral of - |
| integral between the limits a and b - a b |
| circle, circumference ; |
| (), [], {} | parentheses, brackets, and braces - , |
| length of line from A to B - AB |
| micron = 0.001mm - (10-3 )
|
| m
| millimicron = 0.001 - (10-7 )
|
| degree - |
| Minute - |
| second - |
| # | 1. (), ; 2. . , |
| centre line , |
| 1st | first - |
| 2nd | second - |
| 3rd | third - |
| 4th | fourth - ( 4 9 th) |
| 5
| 1. ; 2. 5 .
|
| 9
| 1. ; 2. 9 . |
| .5 | ( ) |
| 1.5 | ( , , , ) |
| 7,568 | =7568; 1,000,000 = 106 ( ) |
| =00000103 = 0,00000103 ( , , 103  10-5
|
| 2/0, 3/0 | .. 00, 000 .., (SWG) |
7
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