Practical Business Arithmetic

ISBN: 9781330047514 出版年：2016 页码：461 John H Moore Forgotten Books

Thus, in the Roman system, VII z 5 1 1. In the Arabic system, 511 5 hundreds 1 ten 1. 5 has not only the unit value five, but also the place value hundreds; and the 1 following has not only the unit value One, but also the place value ten.