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The rectangle above represents one pizza. Dino always
cuts the pizza into 10 slices, then distrubutes them to his guests.
The gray portion represents the part of the pizza that Barney ate.
Barney ate 2
of the ten slices. We say that barney ate 0.2
or two tenths of the pizza.
The blue portion
represents the portion of the pizza that Wilma ate.
Wilma ate 5
of the ten slices. Therefore, Wilma ate 0.5
or five tenths of the pizza.
After Barney and Wilma have eaten their pizza, there are
three of the ten slices left. Therefore, 0.3
or three tenths of the pizza is left.