Delve into the world of numbers with "Progress in Mental Arithmetic Year 5," a workbook that stands as a testament to enhancing mathematical skills. Authored by D.L. Petchell and M.K. McDonald, this book is a valuable resource for students aiming to improve their mental arithmetic proficiency. Published by Primary Education Publications Pty Ltd in 1980, this book is designed specifically for the Year 5 level, focusing on the subject area of Mathematics. It is presented in English and takes the form of a structured book, making it an ideal tool for both learning and revision in the realm of mental arithmetic.