Speed Math
Solve the chain and tap the right answer. Mind the order of operations.
How Speed Math Works
Every task is an arithmetic chain like 10 + 8 - 3 × 2 + 15 shown above a grid of twelve possible answers. Work out the result and tap the correct value: the task clears, your score climbs, and a fresh, slightly harder chain takes its place. The math is real: multiplication and division bind tighter than addition and subtraction, so 3 × 2 resolves to 6 first, and the tiles are laid out to punish a lazy left-to-right read.
Sprint gives you 120 seconds, and the clock only starts on your first tap, so the opening chain is free to read. A wrong tile costs 10 seconds and greys out, but the chain stays until you find the answer, so it pays to be sure. The difficulty ramps as you go: more terms, bigger numbers, then multiplication, and finally clean division. Your best score is saved on this device and waits for you on the start screen.
Zen drops the timer and the penalty entirely: wrong tiles simply dim, and you solve at your own pace for as long as you like. Your Zen progress is remembered between visits, so you always pick up at the stage you reached. Prefer it quiet? Sounds can be muted at any time.