Percent Calculations; Degree, Minute, Second (Sexagesimal) Calculations - Casio fx-991ZA PLUS II User Manual

• Fractions in calculation results are displayed after being reduced to their lowest terms.
To switch a calculation result between improper fraction and mixed
fraction form:
Perform the following key operation:
To switch a calculation result between fraction and decimal form:
Press .

Percent Calculations

Inputting a value and pressing
become a percent.
Example 1: 150 × 20% = 30
Example 2: Calculate what percentage of 880 is 660 (75%)
Example 3: Increase 2500 by 15% (2875)
2500
Example 4: Decrease 3500 by 25% (2625)
3500
Degree, Minute, Second
(Sexagesimal) Calculations
You can perform calculations using sexagesimal values, and convert
values between sexagesimal and decimal.
Performing an addition or subtraction operation between sexagesimal
values, or a multiplication or division operation between a sexagesimal
value and a decimal value will cause the result to be displayed as a
sexagesimal value.
You also can convert between sexagesimal and decimal.
The following is the input format for a sexagesimal value: {degrees}
{minutes} {seconds}
(%) causes the input value to
150 20 (%)
660 880 (%)
2500 15 (%)
3500 25 (%)
.
22
(a b c d c )
30
75
2875
2625