TI -15 Guia Do Utilizador
© 2000 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
TI-15: A Guide for Teachers
79
Comparing fractions and decimals
Linda swims 20 laps in 5.72
minutes. Juan swims 20 laps in 5¾
minutes. Who swims faster?
Compare the time as decimals and
fractions.
minutes. Juan swims 20 laps in 5¾
minutes. Who swims faster?
Compare the time as decimals and
fractions.
To compare the times as decimals:
Numerator Key
Denominator Key
¥
P r e s s
D i s p l a y
5
3
4
®
3
3
4
4
Ÿ
5 Ù 7 5
Ÿ
N
D
D
&
n
d
d
7 5
1 0 0
Continue to compare as fractions:
5
r 72 ®
5 Ù 7 2 Ú
5 Ù 7 2
Ÿ
N
D
D
&
n
d
d
7 2
1 0 0
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5
5
5
5
=
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