Simple Equations relay race

A relay race on Solving Equations suitable for an S1 or S2 class working at level 3 of the CfE.
A couple of more difficult questions towards the end of the relay to challenge more able pupils.
Suitable for revising Solving Equations, ideally class should be split into pairs. All groups issued with Q1, check answers on completion, if correct give them Q2 , if incorrect ask them to re-try Q1. First group to finish are the winners.