Hundreds Chart Subitizing and Beyond is full of resources and activities to help students develop higher level number sense through subitizing the hundred chart. This activity pack contains all hundred chart subitizing cards 1-99. The activity pack also includes activities to use the cards as well as activities which take students from concrete to representational to abstract. Through these activities students will be able to go from subitizing a hundred chart to writing equations with unknown addends. These activities will build students knowledge of number sense so that they will be able to add numbers within 100. The subitizing cards are not limited to these activities. There is so much more you can do with these cards in your classroom.