How it works
Spin, and the wheel lands on a sum. Work it out in your head – no paper, no calculator – and pick the answer. The wrong answers are other answers from the same kind of sum, so guessing by size does not help much.
Your score and your run
Every right answer adds to the Score, and the run counts how many you got right in a row. Best run remembers your record on this device.
Pick the topics
Five kinds of sum: addition, subtraction, multiplication, division and percentages. The wheel starts with addition and subtraction; switch on the others when you are ready.
Easier or harder
Under Quiz settings choose how many Answers to choose from, and switch on Take the ones I got right off the wheel to work through the whole set until nothing is left.