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Great estimations /
by Goldstone, Bruce
Publication:
New York : Scholastic Inc., 2006
. 32 p. :
Date:2006
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Estimation /
by Dowdy, Penny.
Publication:
St. Catharines, Ont. : Crabtree Pub., 2009
. 24 p. :
, Includes index. | "Math concepts made simple"--Cover title.
29 cm.
Date:2009
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Betcha
by Murphy, Stuart J., 1942-
Publication:
New York: Scholastic, 1997
. 33 p.
Date:1997
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