Score
How to play
Choose six numbers, one at a time, from the large numbers (25, 50, 75, 100) and the small ones (two each of 1 to 10), or pick how many large ones you want. The target stays hidden until you press Start the clock (or Reveal the target with no clock): then it appears and the clock starts.
Tap a number, an operation, then another number to combine them. The answer becomes a new number you can use. You don't have to use all six, and each can only be used once. Every step must give a whole number above 0.
Show your working (on unless you turn it off): you type the result of each step before the new number is made. After two tries you get a hint, after three you can ask to be shown.
Scoring: exactly on target 10 points; within 5, 7 points; within 10, 5 points.
Players: with 2 to 4 teams, the teams take turns on the one board (the team to play is highlighted; tap a team to change it). Each New round passes the turn on.
Class game: every team plays on its own device with a PIN, and the board shows the leaderboard.