Math · 5 free levels in the browser · 600 levels in the app
A mathematical reasoning puzzle. One side of a scale holds known weights: find the single value that balances both sides.
Look at the weights on the left pan. Calculate their total, then tap the correct missing weight on the right side from the available choices. The scale will tilt to show you if you are on the right track.
Select the weight that perfectly balances the scale to complete each level.