Calculated Industries 9530 User Guide - Manual (Page 11)

User’s Guide — 7
OPERATING BASICS
BASIC MATH
Your calculator uses standard chaining
logic, which simply means that the
calculations are made in the order
entered.
KEYSTROKE DISPLAY
3 + 2 = 5.
3 – 2 = 1.
3 x 2 = 6.
3 ÷ 2 = 1.5
Percent Calculations
The percent % key is used for finding a
given percentage of a number or for
working add-on, discount or division
percentage calculations.
KEYSTROKE DISPLAY
3 5 5 x 1 5 % 53.25
2 5 0 + 6 5 % 412.5
2 5 – 5 % 23.75
1 0 0 ÷ 5 0 % 200.
Delta Percent
The function finds the percent
change between two values. The =
key must be pressed to complete the
calculation.
KEYSTROKE DISPLAY
1 0 C % 1 5 = 50.
1 0 0 C % 2 5 = - 75.