Keisan Game: Sansuu 5+6-nen

Keisan Game: Sansuu 5+6 Nen is an educational game released for the Family Computer on October 30, 1986. Developed and published by Tokyo Shoseki, it presents arithmetic practice through two distinct minigame formats.

Gameplay

• Decimal Multiplication and Division: Players pilot a spaceship through side-scrolling shooter stages, then solve decimal multiplication or division problems inside buildings while avoiding turret fire.
• Fraction Addition, Subtraction, Multiplication, and Division: Players guide a girl across a field, watering seeds and pushing resulting flowers into numbered baskets to select answers. Red flowers act as obstacles, while roaming animals can hinder progress. A spray can temporarily stun nearby enemies.

Each minigame includes multiple difficulty levels and supports alternating two-player play.