Monkey Academy is a remake of the 1985 Konami educational puzzle game. You can download all 71 of the Crozza Remakes here.
Monkey Academy is all about solving arithmetic problems. One number is missing, and you need to find it while avoiding the bad guys. The game is aimed at young children to help them learn arithmetic problem solving or just play with numbers. Of course, we big kids like it too!
You can configure the keys or use the presets, which isn't difficult to figure out. If memory serves, and that's a longshot, it appears to be an accurate reproduction.