Tug of War Math

Two teams. One rope. Every right answer pulls it your way!

How to play

Two teams stand on either side of one screen (smartboard works great).
Each team has its own number pad and its own math problem.
Answer at the same time, no taking turns.
Each correct answer pulls the rope toward your side.
When the timer hits zero, whoever has the flag on their side wins the round.
First team to win 3 rounds wins the match.

Pick numbers (+ and −)