Light days are short. Five things, tick them off, done. Each tick counts. You don't have to do them all at once.
Mum says a scenario. Talan works out the profit as fast as possible. No paper — head only if he can, fingers OK if needed.
Answers: $3 · $12 · $25. Give a point for each correct one — no penalty for wrong.
Tap when you've finished the five tasks. Every tick counts.