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by Ramón Rubio Silvestre · Editorial Rubio · tapa blanda · ISBN 9788416744640
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«Problemes RUBIO 15 (valencià)» is the maths exercise book by Ramón Rubio Silvestre, published by Editorial Rubio in paperback (20 pages, in Valencian).
This book practises solving problems with addition, subtraction and multiplication by several digits, and also division by one digit. Its activities combine numbers, basic operations and logical-mathematical reasoning to consolidate handling of quantities and understanding of statements.
It is book number 15 in the Operacions i Problemes RUBIO (valencià) collection, in A5 format, aimed at children aged 9 to 10. Published on 20 January 2018.
Recommended for primary school students who study maths in Valencian and need extra school support in calculation and problem solving.
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