Millionaire Style Maths Quiz â Percentages, Interest & VAT PowerPoint GameMake revision exciting with this engaging âWho Wants to Be a Millionaire?â inspired maths quiz PowerPoint! Perfect for GCSE Foundation revision, Functional Skills Maths, KS3/KS4 intervention, or end-of-topic review lessons. Students work through increasingly challenging multiple-choice questions covering: PercentagesPercentage increase & decreasePercentage multipliersSimple interestCompound interestVAT calculationsReverse