How quick is your mental maths?
60 seconds. Every three right in a row moves you up a level, and harder questions score more.
How it works
There are six levels, from adding small numbers up to percentages and squares. Every answer is a whole number. Three right in a row takes you up a level and two wrong in a row takes you down one, so you spend most of the minute at the level that suits you.
A correct answer scores 10 points times its level, so careful work on hard questions beats rushing through easy ones. Skipping counts as a wrong answer.
Today's challenge gives everyone the same questions in the same order. The timer runs in your browser and scores stay on your device.
Just for fun. This is a short quiz, not a validated test of intelligence, ability or cognitive health.