Trade Up

Numerical estimation

Swap for the best offer, or keep your prize.

Starting level. Saved on this device.

Try 5 practice trades. Nothing is timed, and a hint follows each answer.
Then play a 60 second round. The offers get closer to your prize as you get them right.

Press 1, 2 or 3 to swap for an offer, or 0 to keep your prize. You can also tap.

How to play

Trade Up practices judging amounts quickly. You hold a prize with a price. Three offers appear, and sometimes all of them are worth less than your prize. If one tops the prize, swap for the best one. If none does, keep your prize. A swap for a lower offer loses value. Later offers are written as sums, like 3 × $0.25, so you judge the worth in your head. Press 1, 2 or 3 to swap, or 0 to keep. You can also tap.