Click on a square to the left of the X-ray bar and move it to the X-ray bar to reveal the arithmetic problem it contains. Once you determine what the answer to the problem is, move it over the square on the right side of the X-ray bar that contains the answer. Once you have the problem over its answer, drop the squire to place it. Move all problems to their answers to complete the level.
Drag the question, move it to the X-ray bar, find the solution and drop it to the right answer.
Baseb
Monst
Santa
Hallo
Kobra
Chron
Onpip
Word
Amgel
Tile
Batma
Bones
Hill
Idle
Scrap
Ricoc
Hallo
Fruit
Harmo
Fishe
Rainb
Eg Fa
Neon
Easy
Chrom
Crash
Offro
Zombi
Plagu
Delic
Spide
Viril
Fishi