You should probably print out the answers before you play but you don't really have to if you have the inclination to work out the answers on the spot. (tes.com)
This means the students work out the answer to every question in their head as the game goes along. (tes.com)
Instead, say that you need more information or time to think before giving an answer or that you would like to work out an answer together with the other person. (kidsmatter.edu.au)