pause
six recurring, while
5.376376376... is five point three seven six
pause
all recurring;
=  The equals sign 
x=3 ; x≠3  x equals three / x is equal to three ; x (is) not equal to three 
x≡y  x is equivalent to (or identical with) y 
x>y ; x≥y  x is greater than y ; x is greater than or equal to y 
x<y ; x≤y  x is less than y ; x is less than or equal to y 
x<a<y  a is greater than x and less than y / a is between x and y / x is less than a and less than y 
x≤a≤y 
a is greater than or equal to x and less than or
equal to y / a is between
x and y pause bounds
included / x is less than
or equal to a and less than or equal to y

<< ; >> ; <<< ; >>>  much less than ; much greater than ; very much less than ; very much greater than (The last two are not frequently used, but they are in the set of Unicode characters). 
a+b=s (addition)  a and b are the addends, s is the sum, a and b are also the items of the addition. 
a+b=s 
a plus b is (/ equals
/ is equal to)
s a and b is (/ equals / is equal to) s s is the sum of a and b 
ab=d (subtraction or difference) 
a is the minuend, b is the subtrahend, d is the remainder or the difference 
ab=d 
a minus b is (/ equals
/ is equal to) d a take away b is (/ equals / is equal to) d d is the difference between a and b 
a±b  a plus or minus b 
a×b=p, or a·b=p, or simply ab=p (multiplication) 
a and b are the factors or the multipliers, p is the product 
a×b=p, or a·b=p, or simply ab=p 
a times b is (/ equals
/ is equal to) p a multiplied by b is (/ equals / is equal to) p a by b is (/ equals / is equal to) p a b is (/ equals / is equal to) p p is the product of a and b 
a : b = q, or a / b = q (division)  a is the dividend, b is the divisor, q is the quotient or the ratio 
a:b=q, or a/b=q 
a divided by b is (/
equals / is equal to)
q q is the quotient of the division of a by b 
verbs concerning operations  to sum, to subtract / to deduct, to multiply, to divide 
(fraction)  a is the numerator, b is the denominator (the outcome is always called the quotient, as in the division) 
a fraction can be said a divided by b (as a normal division ), or a over b. Cardinal numbers for the numerator and ordinal numbers for the denominator are also used (as in Italian): is a third, is two thirds. Special cases are (a/one half), (a/one quarter), (three halves), (three quarters), and similar. The special notation sometimes used for improper fractions, as , is said three and a half. 
x or abs(x)  The absolute value of x 
a^{b}  a is the base, b is the index or the exponent 
x^{2}  x squared / x (raised) to the power two 
x^{3}  x cubed / x (raised) to the power three 
x^{4}  x to the fourth / x (raised) to the power four 
x^{n}  x to the nth / x (raised) to the power n 
x^{n}  x to the minus n / x (raised) to the power minus n 
root x / square root x / square root of x  
cube root x / cube root of x  
fourth root x / fourth root of x  
nth root x / nth root of x  
nth root pause x
cubed or nth root
pause of x cubed


x hat  
x bar  
x tilde  
x dot  
x dot dot / x double dot  
n!  n factorial / factorial n 
n choose p  
x_{i}  x i / x subscript i / x suffix i / x sub i 
x^{i} (not a power!)  x index i / sometimes x i if no misunderstanding with x_{i} can occur / x superscript i 
(x+y)^{3} ; (x+y)^{n}  x plus y all cubed ; x+y all to the nth 
x^{3}+y^{3}  x cubed plus y cubed 
a_{1} + a_{2} + ... +a_{n}  a one plus a two and so on up to a (sub) n 
a_{1} × a_{2} × ... ×a_{n}  a one times a two and so on up to a (sub) n 
the summation symbol  
the sum as i runs from zero to n of the x i / the sum from i equals zero to n of the x i  
the sum pause as i
runs from one to n pause
of the quantity n over 3
pause plus the quantity 2 over
n pause all squared
(but probably nobody will understand what you mean if
he can't read the blackboard or the transparency!!)


parenthesis pl. parentheses / round brackets  
brackets / square brackets  
braces / curly brackets  
π  pi 