EM ADD/SUBTRACT FACT CARDShttps://www.mheducation.com/cover-images/Jpeg_250-high/0076235262.jpegPreK - 3July 22, 20099780076235261
EM ADD/SUBTRACT FACT CARDS
Grade Levels:PreK - 3
Publication Date: July 22, 2009
ISBN 13: 9780076235261
Durable plastic "flashcards" consist of a "fact family." One number, marked with an asterisk, is the sum or product of the other two numbers. Practice facts and develop an understanding of relationships between operations by covering one number with a thumb. Each set of 36 is packaged with a reclosable plastic bag.