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What happens when...?
What happens when you multiply a number by a number less than 1? Consider all cases. (How do you know you have considered ALL cases?)
In general, what happens when you multiply a whole number by 0.05? In general, what happens when you multiply a whole number by 0.48?
In general, what happens when you multiply a whole number by 0.9?
(Reprinted with permission from Developing Number Sense in the Middle Grades, Addenda Series Grades 5-8,
copyright 1991 by the National Council of Teachers of Mathematics. All rights reserved.)
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