This product contains 48 decimal cards which align to Common Core standard: 4.NF.7. These cards can be used in a variety of ways to play a number of games. However, the student directions included are specifically for the game Decimal War. The cards are perfect for small group instruction or a center activity. Directions for students are included. Perfect for math workshop!! Simply print, cut laminate! Enjoy and please contact me should you have any questions.