Make Ten

From the App Store Source

Make Ten turns your daily commute into a puzzle. Inspired by the Sydney Trains Make Ten Challenge, the goal is simple: every train carriage has a unique four-digit number, and using all four of those digits together with basic arithmetic, you try to make the number 10. Point your camera at a carriage number and Make Ten reads the digits automatically, or type the four digits in yourself. Instantly see whether a solution exists, and reveal the full working equation whenever you're ready. Features: - Camera scanning — point at a carriage number plate and the digits are detected automatically, no typing required - Manual entry — enter any 4-digit code by hand - Instant solvability check — know right away if the code can be made into 10 - Spoiler Guard — hide the solution until you choose to reveal it, so you can try solving it yourself first - Optional exponentials — allow powers (^) as well as +, −, ×, ÷ for trickier codes - Play mode — generate a random solvable code and solve it yourself right in the app: tap two tiles and an operator to combine them, with undo and reset, until you reduce everything to 10 - Light and dark themes — follow your system setting or pick Light/Dark yourself Whether you're killing time on the platform or just enjoy a quick daily arithmetic challenge, Make Ten is a lightweight, offline-friendly way to keep your mental maths sharp.

Every number in these answers comes from the data shown above on this page.