© 1999 T
EXAS 
I
NSTRUMENTS 
I
NCORPORATED
 TI-30X ÙS: A Guide for Teachers
41
1 
(first)
Expressions inside D E
2
Functions that need a E and precede the
expression, such as the >, A, or
%
’
 
menu items
3
Functions entered after the expression, such
as F and angle unit modifiers (¡, ¢, £, r, g)
4
Fractions
5
Exponentiation (G) and roots (% 
¡
)
6
Negation (M)
7
Permutations (nPr) and combinations (nCr)
8
Multiplication, implied multiplication, and
division
9
Addition and subtraction
10
Conversions 
(
%
š
, 
%
“
, 
and 8DMS)
11 
(last)
< 
completes all operations and closes all
open parentheses
.
Equation Operating System EOS
é