Drag with your mouse or glide your finger across the screen to navigate the interface and dive straight into the action.
This math puzzle game isn’t about crunching numbers—addition and subtraction aren’t the hard part. The real trick is figuring out which blocks to pair up to land on zero in that final slot. Stuck? No sweat. Head to the main screen and hit the Video button for a step-by-step walkthrough of every level.
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