Recko

Three real-world quantities are given, each a whole number between 10 and 99 to be estimated, and the player has sixty seconds to add and subtract them mentally without a calculator. A hidden theme linking the three is revealed after answering. One shared puzzle is set per day.

Category

Estimation, Math, Trivia

How you play

Estimate a number, Find the equation

Languages

English

Daily puzzle

Yes

Unlimited mode

No

• 7.2
  Fermi

  Estimate answers to three Fermi problems
  Play
• 6.9
  Guess The Angle

  Estimate a drawn angle in degrees
  Play
• 6.9
  Estimania

  Estimate the answers to five number questions
  Play
• 6.8
  Angle

  Guess an angle's size in degrees
  Play
• 6.8
  Centroid

  Click the center of mass of a shape group
  Play
• 6.6
  Angled

  Rebuild a briefly shown angle from memory
  Play
• 6.5
  Estimatle

  Estimate five numbers from everyday trivia
  Play
• 6.5
  Counted

  Estimate how many objects flashed on screen
  Play