Whole Numbers And Decimals - Texas Instruments TI-15 Teachers Manual

Whole Numbers and Decimals

Keys
1. r enters a decimal point.
2. Š sets the number of decimal
places in conjunction with the Place
Value keys (3 through 9 on the
illustration below). Only the
displayed result is rounded; the
internally stored value is not
rounded. The calculated value is
padded with trailing zeros if needed.
3. Š  rounds results to the
nearest thousand.
2
3
4
5
6
7
8
9
© 2000 T I
EXAS NSTRUMENTS
1
I
NCORPORATED
4. Š ' rounds results to the
nearest hundred.
5. Š ' rounds results to the
nearest ten.
6. Š " rounds results to the
nearest one.
7. Š ˜ rounds results to the
nearest tenth.
8. Š ™ rounds results to the
nearest hundredth.
9. Š š rounds results to the
nearest thousandth.
Š r removes the fixed-decimal
setting.
You must press Š before a Place
Value key each time you want to
change the number of places for
rounding.
Notes
The examples on the transparency
masters assume all default
settings.
The calculator automatically
rounds the result to the number of
decimal places selected. (Only the
displayed value is rounded. The
internally stored value is not
rounded.)
TI-15: A Guide for Teachers
6
63