7-3
2. Simple Interest
This calculator uses the following formulas to calculate simple interest.
u Formula
365-day Mode SI : interest
n : number of interest periods
360-day Mode PV : principal
I % : annual interest
SFV : principal plus interest
Press 1(SIMPLE) from the Financial 1 screen to display the following input screen for simple
interest.
1(SIMPLE)
n ........... number of interest periods (days)
I % ........ annual interest rate
P V ........ principal
After configuring the parameters, use one of the function menus noted below to perform the
corresponding calculation.
• { SI } … {simple interest}
• {SFV} … {simple future value}
• An error occurs if parameters are not configured correctly.
Use the following function menus to maneuver between calculation result screens.
• {REPEAT} … {parameter input screen}
• {GRAPH} … {draws graph}
SI' =
n
365
× PV × i
SI' =
n
360
× PV × i
I%
100
i =
I%
100
i =
SI' =
n
365
× PV × i
SI' =
n
360
× PV × i
I%
100
i =
I%
100
i =
SI = –SI'
SFV = –(PV + SI' )
SI = –SI'
SFV = –(PV + SI' )
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