Texas Instruments TI15TK Teacher Guide - Page 80
Adding mixed numbers, Numerator Key, Denominator Key, Unit Key, Mixed to Improper, Conversion
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Adding mixed numbers A baby girl weighed 4 3/8 pounds at birth. In the next 6 months, she gains 2 3/4 pounds. How much does she weigh? Numerator Key ž Denominator Key ¥ Press 4 8 ¥ 3 žT 2 3 ž 4 ¥ ® ¦ Display 4íí3í Û 8 Unit Key Mixed to Improper Conversion ¦ 4 í3íí + 2íí3í = 7 í1íí 8 4 8 í5íí7íí 8 © 2000 TEXAS INSTRUMENTS INCORPORATED TI-15: A Guide for Teachers 73
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© 2000 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
TI-15: A Guide for Teachers
73
Adding mixed numbers
A baby girl weighed 4
3
/
8
pounds at
birth. In the next 6 months, she
gains 2
3
/
4
pounds. How much does
she weigh?
Numerator Key
²
Denominator Key
¥
Unit Key
±
Press
Display
4
±
8
¥
3
²
T
3
8
¦
2
±
3
²
4
¥
®
3
3
1
8
4
8
¦
57
8
ííí
ííí
ííí
ííí
ííííí
4
7
4
2
Û
=
+
Mixed to Improper
Conversion