E-8
6th
STAT Mode estimated values (K, L, K
1
, K
2
)
7th Multiplication where the multiplication sign is omitted
8th Permutation (nPr), combination (nCr)
9th
Multiplication, division (s, ÷)
10th Addition, subtraction (+, –)
Inputting with Natural Display
Selecting Natural Display makes it possible to input and display fractions 
and certain functions (
x
2
, x
3
, x9, , , , x
−1
, 109, e9, Abs) just as they 
are written in your textbook.
 
2 + 
'
2
1 + 
'
2
 
   2  2 CC 1  2  
Important:  • Certain types of expressions can cause the height of a 
calculation formula to be greater than one display line. The maximum 
allowable height of a calculation formula is two display screens (31 dots s 2). 
Further input will become impossible if the height of the calculation you are 
inputting exceeds the allowable limit. • Nesting of functions and parentheses 
is allowed. Further input will become impossible if you nest too many functions 
and/or parentheses. If this happens, divide the calculation into multiple parts 
and calculate each part separately.
Note: When you press  and obtain a calculation result using Natural 
Display, part of the expression you input may be cut off. If you need to view 
the entire input expression again, press  and then use B and C to 
scroll the input expression. 
Using Values and Expressions as Arguments 
(Natural Display only)
A value or an expression that you have already input can be used as the 
argument of a function. After you have input 
7
6
 , for example, you can make 
it the argument of , resulting in
7
6
 .
  To input 1 + 
7
6
 and then change it to 1 +
7
6
 
   1  7  6 
  BBBB)(INS) 
   
As shown above, the value or expression to the right of the cursor after 
)(INS) are pressed becomes the argument of the function that is 
specified next. The range encompassed as the argument is everything up 
to the first open parenthesis to the right, if there is one, or everything up to 
the first function to the right (sin(30), log2(4), etc.)