Fractions - Texas Instruments TI-15 Teachers Manual

Fractions

Keys
1. ¢ displays a menu of mode
settings from which you can select
how the fraction results will be
displayed. You select 2 items.
U n/d (default) displays mixed
number results.
n/d displays fraction results.
Man (default) displays unsimplified
fraction results so you can simplify
them manually (step-by-step).
Auto displays fraction results
simplified to lowest terms.
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2.  lets you enter the whole-
number part of a mixed number.
3. ž lets you enter the numerator of
a fraction.
4. ¥ lets you enter the denominator
of a fraction.
5. ¦ changes a mixed number to
a fraction and vice versa.
6. ¤ simplifies a fraction using the
lowest common prime factor. If you
want to choose the factor (instead
of letting the calculator choose it),
press ¤, enter the factor (an
integer), and then press ®.
You must be in Manual mode to
use this function.
7. Ÿ changes a fraction to its
decimal equivalent and vice versa.
8. § displays the factor (divisor)
used to simplify the last fraction
result. You must be in Manual
mode to use this function.
Notes
The examples on the transparency
masters assume all default
settings.
TI-15: A Guide for Teachers
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