© 1999 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
TI-34
Û
: A Guide for Teachers
35
Sewing Costumes—
Fractions
Name ___________________________
Date
___________________________
Problem
You are sewing costumes for a dance festival. Each costume takes 2
3
/
8
yards
of material. You have 23 yards of material to make 14 costumes. Do you have
enough? If you do, do you have any extra? How much? Do you need more?
How much?
Procedure
1. Using the TI
-
34
Ö
, compute how many yards of material are needed for the
costumes by multiplying the amount needed for each costume by the number
of costumes.
Total yardage needed for 14 costumes:
Do you have enough?
2. Find out how much more you need by subtracting the amount of material you
have from the total amount needed.
Additional amount of material needed:
3. If the material costs $3.98 per yard, find out how much it will cost to buy the
additional material. (Multiply the cost per yard by the additional yardage
needed.)
Cost to buy additional material: $
4. Determine how many costumes you could make with the material you have by
dividing the yardage you have by the amount needed for each costume.
Number of costumes with material on hand:
5. If each costume required only 1
2
/
3
yards, determine if you would have enough
material to make the 14 costumes. Do you have enough?
Extension
If you wanted to make a shirt or other item, find out how much material it
would take, and figure out how much material would be needed to make
matching shirts for everyone in the class. How much would it cost to make
shirts for the class?
