My kids love these activities!! 10 station cards that have an answer on the top half and a problem on the bottom half.
Students can start at any card (I usually make a couple copies of this and tape them all up around the room to eliminate multiple people at each card). They answer the problem on the bottom half of the paper. Once they have an answer they look around the room for the answer they got. I also tell my students, if you dont find your answer... you're wrong! :) Once they locate that answer they go work the problem on the bottom of that answer.
*They are in order already, so tape them in a different order than what they print!!
Answer key is provided as well as their work page.
Great thing is they really can start on any problem, the answers will still be in the same order!