Calculated Industries 4225-C - Manual (Page 19)

P OCKET R EFERENCE G UIDE — 16
BASIC MATH OPERATIONS
Your calculator uses standard chaining
logic, which simply means that you enter
your first value, the operator (
+, –, x,
÷), the second value and then the Equals
sign (
=).
A. 3 + 2 = 5.
B. 3 – 2 = 1.
C. 3 x 2 = 6.
D. 3 ÷ 2 = 1.5
This feature also makes the calculator
simple to use for dimensional applications:
Adding and Subtracting Strings of
Dimensions
Add the following measurements:
• 6 Feet 2-1/2 Inches
• 11 Feet 5-1/4 Inches
• 18.25 Inches
Then subtract 2-1/8 Inches.
KEYSTROKE DISPLAY
6 f 2 i 1 / 2 +
1 1 f 5 i 1 / 4 +
1 8 • 2 5 i =
19
FEET
2
INCH
– 2 i 1 / 8 = 18
FEET
11-7/8
INCH
Multiplying Dimensions
Multiply 5 Feet 3 Inches by 11 Feet 6-1/2
Inches:
KEYSTROKE DISPLAY
5 f 3 i x 1 1 f
6 i 1 / 2 =
60.59375
SQ FEET