fx-82MS
fx-85MS
fx-220 PLUS
fx-300MS
fx-350MS
(2nd edition / S-V.P.A.M.)
Before Using the Calculator
Calculation Modes and Calculator Setup
Basic Calculations
- ▶Inputting Expression and Values
- ▶Arithmetic Calculations
- ▶Fraction Calculations
- ▶Percent Calculations
- ▶Degree, Minute, Second (Sexagesimal) Calculations
- ▶Multi-Statements (fx-82MS/fx-85MS/fx-300MS/fx-350MS only)
- ▶Using Engineering Notation
- ▶Calculation History and Replay
- ▶Using Memory Functions
Function Calculations
- ▶Pi (π), Natural Logarithm Base e
- ▶Trigonometric Functions, Inverse Trigonometric Functions
- ▶Hyperbolic Functions, Inverse Hyperbolic Functions
- ▶Angle Unit Conversion
- ▶Exponential Functions, Logarithmic Functions
- ▶Power Functions and Power Root Functions
- ▶Rectangular-Polar Coordinate Conversion
- ▶Factorial (!)
- ▶Random Number (Ran#)
- ▶Random Integer (RanInt#) (fx-220 PLUS only)
- ▶Permutation (nPr) and Combination (nCr)
- ▶Rounding function (Rnd)
Using Calculation Modes
Technical Information
Percent Calculations
| Calculation Type | Calculation Formula | Calculation Method and Key Operations |
|---|---|---|
| Percentage Example 1 |
A × B100 | What is B percent of A? A  B  (%) |
| Ratio Example 2 |
AB × 100 | What percent of B is A? A  B(%) |
| Premium Example 3 |
A + A × B100 | What is A increased by B percent? A B(%) |
| Discount Example 4 Example 5 |
A - A × B100 | What is A decreased by B percent? A B(%) |
| Rate of Change (1) Example 6 |
A + BB × 100 | If A is added to B, by what percent does B change? A B(%) |
| Rate of Change (2) Example 7 |
A - BB × 100 | If B becomes A, by what percent does B change? A B(%) |
Example 1: To calculate 12% of 1500 (180)
- 150012(%)
- 180.
Example 2: To calculate what percentage of 880 is 660 (75%)
- 660880(%)
- 75.
Example 3: To increase 2500 by 15% (2875)
- 250015(%)
- 2875.
Example 4: To decrease 3500 by 25% (2625)
- 350025(%)
- 2625.
Example 5: To decrease the sum of 168, 98, and 734 by 20% (800)
fx-82MS/fx-85MS/fx-300MS/fx-350MS:
- 16898734
(STO)
(A)
(A)*20(%) - 800.
* As shown here, if you want to use the current Answer Memory value in a mark up or discount calculation, you need to assign the Answer Memory value into a variable and then use the variable in the mark up/discount calculation. This is because the calculation performed when (%) is pressed stores a result to Answer Memory before the key is pressed.
fx-220 PLUS:
- 16898734
(Min)
20(%) - 800.
Example 6: 300 grams are added to a test sample originally weighing 500 grams, producing a final test sample of 800 grams. What percent of 500 grams is 800 grams? (160%)
- 300500(%)
- 160.
Example 7: What is the percentage change when a value is increased from 40 to 46? How about to 48? (15%, 20%)
- 4640(%)
- 15.
- 8
- 20.
