"", "10¢ + 4¢ = 14¢" "", "10¢ + 10¢ + 1¢ = 21¢" "", "25¢ + 4¢ = 29¢" "", "10¢ + 5¢ + 3¢ = 18¢" "", "25¢ + 5¢ = 30¢" "", "10¢ + 2¢ = 12¢" "", "10¢ + 2¢ = 12¢" "", "5¢ + 6¢ = 11¢" "", "5¢ + 4¢ = 9¢" "", "5¢ + 2¢ = 7¢ "