Algebra Readiness Made Easy: Gr. 4 © 2008 by Greenes, Findell & Cavanagh, Scholastic Teaching Resources
STAMP STUMPERS
TEACHING TRANSPARENCY
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4
Who is sharp as a tack?
How much is one trapezoid stamp?
The total cost of the five stamps on the envelope is 21¢.
The trapezoid stamps cost the same.
Wally Walrus
Ralph RhinoMarlee Marlin
You’re both
wrong. It has
to be 4¢.
I’m sure
it costs 6¢.
That’s easy.
One trapezoid
stamp costs
5¢.
5 stamps
Total cost... 21¢
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