Arithmeticke abreviated [electronic resource] : Teaching the art of tennes or decimals to worke all questions in fractions as whole numbers, without reduction: an easier and plainer way than the vulgar. Shewing the use also of Napiers bones, by which multiplication and division is performed without charging the memory at all to those that will make use of them. As also the extracting of the square and cube roots, with divers applications thereof.