FX 65 Training guide Tools FX 65 Fraction Calculator Overhead OH 65 Handouts Applicable activities Activities for the Classroom FX-65 Fraction Calculator Other materials Quick Reference Guide (inside the calculator cover) Overview Key Points/ True fraction display Fraction and decimal conversions...
FX 65 Training guide Display Indicators The display window has many indicators that will be displayed when a certain function is performed. Alternatively, it may also show the status of a setting. The following is a list of the display indicators along with a description:...
FX 65 Training guide Display Set Up The FX-65 allows you to change the display format for the following: Fixed number decimal places Number of significant digits in scientific notation Engineering notation mode Function [FIX] n Sets the number of decimal places according to the value you input for n (0 –...
Clears the displayed input value. [SHIFT] Shifts the keyboard and accesses functions marked above the keys. Note: There is no power off key. The calculator automatically turns off about six minutes after you finish using it. Basic Calculations Be sure to press [AC] when beginning a new calculation.
FX 65 Training guide Fraction calculations and simplification • You can perform addition, subtraction, multiplication, and division. • The result of a calculation that mixes fractions and decimal values is displayed as a decimal value. • Using the [b/c] key, you can enter a fraction with up to 4 digits in both the numerator and denominator.
Internal Rounding Calculates internal rounding based on the number of decimal places you have on the display. For example, set the calculator to 3 fixed decimal places. Press  [÷]  [=] Press [SHIFT] [RND]. This will truncate the number at 3 decimal places.
FX 65 Training guide Probability Random number generation [SHIFT] [RAN#] Generates a random number between 0 and 0.999. Permutations and combinations [SHIFT] [nPr] A permutation is a selection of objects in which the order matters. Example: To determine the number of possible different arrangements using 4 items selected from 10 items.
FX 65 Training guide Memory Memory Calculations The memory function is convenient for calculating cumulative totals. [M+] Adds displayed value to memory. [MR] Recalls the value stored in memory. [SHIFT] [MC] Clears memory. [SHIFT] [M-] Subtracts the displayed value from memory.
FX 65 Training guide Trigonometry Be sure to select the angle unit (D, R, G) you want to use before beginning a calculation. Trigonometric/Inverse Trigonometric Functions To calculate the sine, cosine, or tangent of the displayed angle. Example (in degree mode):  [sin] To calculate the arcsine, arccosine, or arctangent.
FX 65 Training guide Statistics Entering and analyzing statistical data [SHIFT] [STAT] Enters the statistics mode. [COMP] Exits the statistics mode. Note that all input data is deleted. [SHIFT] [SAC] Clears statistical memory. Be sure to perform this operation before inputting new data.