Murphy, Stuart J.,

The shark swimathon / by Stuart Murphy ; illustrated by Lynne Cravath. - New York : HarperCollins, 2001. - 32 p. : col. ill. ; 21 x 25 cm. - MathStart .

"Level 3. Subtracting two-digit numbers."

As members of a swim team do laps to qualify for swim camp, readers can practice subtracting two-digit numbers to see how many laps are left to go.

ISBN: 0060280301 006446735X 006028031X (lib. bdg.)

LCCN: 99030312

Subjects--Topical Terms:
Subtraction.

LC Class. No.: QA115 / .M875 2001

Dewey Class. No.: 513.2/12