## 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 × B}_{100} |
What is B percent of A? AB(%) |

Ratio Example 2 |
^{A}_{B} × 100 |
What percent of B is A? AB(%) |

Premium Example 3 |
A + ^{A × B}_{100} |
What is A increased by B percent? AB(%) |

Discount Example 4 Example 5 |
A - ^{A × B}_{100} |
What is A decreased by B percent? AB(%) |

Rate of Change (1) Example 6 |
^{A + B}_{B} × 100 |
If A is added to B, by what percent does B change? AB(%) |

Rate of Change (2) Example 7 |
^{A - B}_{B} × 100 |
If B becomes A, by what percent does B change? AB(%) |

**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.