by Ramón Rubio Silvestre · Editorial Rubio · tapa blanda · ISBN 9788485109722
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«Problemas Rubio 17» is the math problem workbook by Ramón Rubio Silvestre, published by Editorial Rubio in paperback (20 pages, in Spanish).
Exercise workbook focused on solving arithmetic problems with multi-digit additions, subtractions, multiplications and divisions. The activities present varied situations that require choosing the right operation and applying logical-mathematical reasoning, to reinforce calculation and understanding of word problems at elementary level.
It belongs to the RUBIO Operations and Problems collection, number 17. It is the new improved and updated 2018 edition of a workbook originally published in 1977.
It is aimed at elementary school students aged 10 to 11 and serves as math reinforcement material.
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