Get your students up and moving! This write the room fall themed set includes two sets of cards: addition within 20 and missing addends Each set contains 24 cards to be placed through out the classroom. There are three different recording sheets for the missing addends set. Students can write only the missing addend, write the missing addend and the number sentence or write the complete number sentence. Answer keys are included. These cards can also be used as task cards at a math center.