数学试题中常用的数学符号总结如下:
SYMBOL MEANING
= is equal to
≠ is not equal to
≈ is approximately equal to
> is greater than
≥ is greater than or equal to
< is less than
≤ is less than or equal to
square root
0.8 the repeating decimal 0.888…
r s’t” r degrees s minutes t seconds
∠ angle
right angle
┻ is perpendicular
│x│ absolute value of x
∥ is parallel to
△ triangle
~ is similar to
≌ is congruent to
△x delta x
AB arc AB
π pi(3.1415…)
1.is equal to; is the same as 
                       =
   the result is; yields; gives 
2.the sum of x and y; the total of x and y; 
  x added to y; x increased by y;          x+y 
  x more then y; x greater than y 
3.x minus y; x less y; 
  the difference of x and y; x take away y;
   from x subtract y’ x decreased by y;         x-y
   x diminished by y; y is subtracted from x;
   y less than x (note the reversal) 
4. x multiplied by y;
                              xy
  the product of x and y; 
5. divided by y; 
  the quotient of x and y;                x y,
  y divided into x (note the reversal) 
6. A and B are factors of C;
  A and B are divisors of C;
  C is divisible by A and by B;            A B=C
  C is a multiple of A and of B;
  A divides C and B divides C; 
7. the ratio of a to b                   a:b, 
8. reciprocal of x
9. x times as many z as y; z=x y
10. a squared; 
   a to the second power                 a2 
11. a cubed;                         a3
  a to the third power 
12. between a and b                   (a,b)
  between a and b, inclusive             [a,b] 
13. off 低于,从……中扣除
14. account for 占
15. third
16. of x (a fraction of x);              x,0.75x
                         75% of x (a percent of x)