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Percent Calculations; Using Engineering Notation; Prime Factorization - Casio fx-82EX User Manual

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Note
• Mixing fractions and decimal values in a calculation while something
other than MathI/MathO is selected will cause the result to be displayed
as a decimal value.
• 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, press ().

Percent Calculations

Inputting a value and pressing (%) causes the input value to
become a percent.
150 × 20% = 30
Calculate what percentage of 880 is 660. (75%)
Discount 3500 by 25%. (2625)
Degree, Minute, Second (Sexagesimal) Calculations
The syntax below is for inputting a sexagesimal value: {degrees} 
{minutes}  {seconds} . Note that you must always input something
for the degrees and minutes, even if they are zero.
2°20'30" + 9'30" = 2°30'00"
Convert 2°30'0" to its decimal equivalent.
Multi-Statements
You can use the colon character (:) to connect two or more expressions and
execute them in sequence from left to right when you press .
3 + 3 : 3 × 3
Note: Inputting a colon (:) while LineI/LineO or LineI/DecimalO is selected
for the Input/Output setting on the setup menu causes a newline operation
to be performed.

Using Engineering Notation

Transform the value 1234 to engineering
notation, shifting the decimal mark to the
right, and then to the left.

Prime Factorization

In the Calculate Mode, a positive integer no more than 10 digits long can be
factored to prime factors.
To perform prime factorization on 1014
To re-display the unfactored value, press (FACT) or .
Note: The types of values described below cannot be factored, even if they
have 10 or fewer digits.
3500350025(%)
220300930
(Converts decimal to sexagesimal.) 
10
15020(%)
660880(%)
33(:)33
1234
(←)
(←)
1014
(FACT)
2°30'0"
2°30'0"
1.234×10
1234×10
1.234×10
0.001234×10
2×3×13
30
75
2625
2.5
6
9
1234
3
0
3
6
1014
2

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This manual is also suitable for:

Fx-85exFx-350ex