¡Kawashima Ryuta Kyoju No No Katsu Keisan 120 Nichi 2(Gakken No Toremini)
¡Kawashima Ryuta / Kanshu
Description
[Machine Translation] Improve your brain power! Activate your brain with interesting calculations! 15 kinds of calculations you can play with! 1600 problems, including: hole math, number of squares, vertical and horizontal calculations, number of stones, tree multiplication, 3 hole math, and 2 number calculations.
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