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Pick the most expensive prizes to exercise your quick estimation skills.

Numerical Estimation

Numerical estimation is the ability to approximate numerical relationships quickly or with incomplete information.

Exercise your probabilistic reasoning by matching the pattern of cards needed fo...

Exercise your proportional reasoning skills by measuring ingredients for delicio...

Chalkboard Challenge improves the quantitative reasoning and problem-solving ski...

Raindrops uses arithmetic to improve problem-solving skills. Play Raindrops to b...