Some of the skills tested in the study seem more like arithmetics rather than financial skills: - "About a quarter could not work out how much change they should receive from a shop..." - "About one in three adults struggled to work out the price they had to pay.. per litre or per kilo" - "About half could not read a simple financial line graph" - "Most struggled to calculate discounts involving more complex calculat…
To add to what you said: I think explaining basic concepts is the way to go: Explain compound interest, how much 1$ today will be worth in their retirement at a fixed rate. How does money devalue with inflation, and other basic personal finance aspects. But above all, give people the intuition rather than just say "you should invest your savings"