Quick Reference To Keys - Texas Instruments TI-15 Teachers Manual

Quick Reference to Keys

Key
£
ž
¥

¢
¢$
¤
§
¦
Ÿ
ª
© 2000 T I
EXAS NSTRUMENTS
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.
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TI-15: A Guide for Teachers
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