"Percent Bingo. Is just what you are looking for, an engaging and easy way to build fluency. " - TeachersWithApps. Com. 5/5 Stars - Edu. App Certified - EducationalAppStore. Com. Fluency Games is proud to present their newest game, Percent Bingo! Play the classic bingo game that is designed to build fluency and number sense with fractions, percents and decimals.