Texas Instruments TI15TK Teacher Guide - Page 78

: Fractions

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Fractions 8 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. 3 5 2 1 6 8 4 7 2.  lets you enter the wholenumber 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. © 2000 TEXAS INSTRUMENTS INCORPORATED TI-15: A Guide for Teachers 71

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© 2000 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
TI-15: A Guide for Teachers
71
Fractions
8
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.
2.
±
lets you enter the whole-
number part of a mixed number.
3.
²
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.
1
7
8
5
3
4
6
2