¡No Ga Kassei Ka Suru Otona No Omoshiro Keisan No Drill Sansu Puzzle Hen(Genki No Renshu Cho)
¡Kawashima Ryuta / Kanshu
 Description
[Machine Translation] Coin addition, math crosses, +- puzzles, relay calculations, total 10 divisions, trigonometric puzzles, hole counting, Shiritori calculations, total 100 calculations, math puzzles, list strokes, and corner calculations. 15 fun number puzzles! 1960 problems.
凌 Credits
Ryuta Kawashima
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