Texas Instruments TI15TK Teacher Guide - Page 70

: Whole Numbers and Decimals

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Whole Numbers and Decimals 6 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. 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 2 rounds the result to the number of 3 decimal places selected. (Only the 4 displayed value is rounded. The 5 internally stored value is not 6 rounded.) 7 1 8 9 © 2000 TEXAS INSTRUMENTS INCORPORATED TI-15: A Guide for Teachers 63

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© 2000 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
TI-15: A Guide for Teachers
63
Whole Numbers and Decimals
6
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.
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.)
1
9
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6
5
4
3
2