Help students develop number sense fluency see number relationships and expand their strategies for addition and subtraction. The unique cards are presented in three decks of 44 cards which can be used individually or combined for games and activities. Cards are color-coded for easy identification and sorting. Five Frame Deck: Features five frames with a green background and numbers 0-5. Ten Frame Deck: Features ten frames with a blue background and numbers 0-10. Double Ten Frame Deck: Features double ten frames with a yellow background and numbers 10-20. Includes three individually boxed decks of cards and a teacher guide with suggested activities. Cards measure 3" x 2 1/2".