Place Value - Texas Instruments TI-15 Teachers Manual

The Value of Place Value
Continuing the Investigation
Connect the place-value patterns to money. For
example, ask students:
If each one of your "jelly beans" costs a penny,
how many pennies would you spend for 1,314
jelly beans?
1,314 pennies.
How many dimes (tens) would you spend?
131 dimes and 4 more pennies.
How many dollars (hundreds)?
13 dollars, plus 14 more pennies, or 1 dime and 4
pennies.
Older students can record the money (and enter it
into the calculator) in decimal form, 13.14. Then they
can use the calculator to connect dimes to one tenth
(0.1) of a dollar ($13.14 has 131 dimes or tenths) and
pennies to one hundredth (0.01) of a dollar ($13.14
has 1314 pennies or hundredths).
For older students, connect the place-value patterns
to conversions between metric units. For example, a
measurement of 324 centimeters can also be
recorded as 32.4 decimeters (or rounded to 32 dm)
because 1 dm = 10 cm, or it can be recorded as 3.25
meters (or rounded to 3 m), because 1 m = 100 cm.
© 2000 T I
EXAS NSTRUMENTS
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TI-15: A Guide for Teachers
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