Calculated Industries 3420 Pocket Reference Guide - Manual (Page 10)

P OCKET R EFERENCE G UIDE — 9
Basic Math
This calculator uses standard chaining
logic. This means the first value is
entered, then an operator, then the sec-
ond value, then the Equals
= key to get
your answer.
A. 2 1 6 + 8 4 = 300.00
B. 2 1 6 – 1 6 = 200.00
C. 1 2 x 1 2 = 144.00
D. 1 4 4 ÷ 1 2 = 12.00
Percentage Calculations
The Percent % key is used to find a given
percent of a number or for working add-
on, discount or division percentage calcu-
lations.
A. 8 0 0 x 2 5 % = 200.00
B. 2 5 0 + 1 0 % = 275.00
C. 2 5 – 5 0 % = 12.50
D. 2 0 0 ÷ 5 0 % = 400.00
EXAMPLES
3420PRG-E-A 7/2/04 9:07 AM Page 9