Casio FC-200V - Manual (Page 36)

E-34
A Replay Function
While a calculation result is on the display, you can press
d or e to edit the expression you used for the previous
calculation.
Example: 4
Ч 3 + 2.5 = 14.5
4
Ч 3 – 7.1 = 4.9
4*3+2.5 E
A
d
YYYY
-7.1 E