Mental maths

1–8 players · 2 min

A sum on the screen: 56 + 108. Solve it in your head — faster and more exactly than your friends.

How it works

  • Seven sums, each harder: two two-digit → with a three-digit → with a minus → three three-digit numbers.
  • The first three — pick the answer from four, then type it on the keypad.
  • Exact — 100 points plus up to 50 for speed. When typing, a close answer also scores a little.
  • Your own phone measures time, so a slow connection doesn't matter.

Tips

  • Add by place value: hundreds first, then tens, then ones.
  • Not sure? Type something close: 0 points is worse than 40.

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