When a monster offers to help a boy who is afraid of numbers by doing his math homework, the boy eagerly signs a contract and agrees to pay later, but the first time he is asked to solve a problem in class and cannot, he realizes he has gotten no bargain.
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ISBN: 9781561456680 (pbk.)
ISBN: 1561456683 (pbk.)
Physical Description:1 v. (unpaged) : col. ill.print