The ground of arts [electronic resource] : teaching the perfect worke and practise of arithmeticke, both in whole numbers and fractions after a more easie and exact sort then hitherto hath beene set foorth / made by Mr. Robert Record ... ; and now lately diligently corrected and beautified with sundry new rules and necessary additions ... ; whereunto are also added diuers tables and instructions ... by Iohn Mellis ; and now lastly corrected by Iohn Wade.