Texas Instruments TI15TK Teacher Guide - Page 120
Function, is displayed after you convert a fraction to a mixed number
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Quick Reference to Keys (Continued) A Key £ ¥ ¢ ¢$ Function When you divide a positive whole number by a positive whole number using £, the result is displayed in the form Q r R, where Q is the quotient and R is the remainder. If you use the result of integer division in a subsequent calculation, only the quotient is used; the remainder is dropped. When pressed after entering a number, designates the numerator of a fraction. The numerator must be an integer. To negate a fraction, press M before entering numerator. When pressed after entering a number, designates the denominator of a fraction. The denominator of a fraction must be a positive integer in the range 1 through 1000. If you perform a calculation with a fraction having a denominator greater than 1000, or if the results of a calculation yield a denominator greater than 1000, the TI-15 will convert and display the results in decimal format. Separates a whole number from the fraction in a mixed number. Displays a menu of settings that determine how fraction results are displayed. • U n/d (default) displays mixed number results. • n/d displays results as a simple (improper) fraction. If N/d"n/d is displayed after you convert a fraction to a mixed number, you can further simplify the fractional portion of the mixed number. Displays a menu to select the method of simplifying fractions: • Man (default) allows you to simplify manually (step-by-step). • Auto automatically reduces fraction results to lowest terms. Enables you to simplify a fraction. Displays the factor that was used to simplify a fraction. Converts a mixed number to an improper fraction or an improper fraction to a mixed number. Converts a fraction to a decimal, or converts a decimal to a fraction, if possible. Converts p to a decimal value. Enters a percentage. © 2000 TEXAS INSTRUMENTS INCORPORATED TI-15: A Guide for Teachers A-2