 "Decimals" seven learning modules include tutorials on conversion, addition, subtraction, rounding off, multiplication, division and percentage.Originally developed by Edu-Ware founder Sherwin Steffin and programmer David Mullich as a text-based program, Edu-Ware upgraded it to hi-res graphics in 1982, renaming it "Edu-Ware Decimals, and later, simply "Decimals".The program was featured in the company's catalogs until its closure in 1985.