by Ramón Rubio Silvestre · Editorial Rubio · tapa blanda · ISBN 9788416744657
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«Problemes RUBIO 16 (valencià)» is the math problem workbook by Ramón Rubio Silvestre (Editorial Rubio, paperback, 20 pages, in Valencian).
The workbook presents problems involving addition, subtraction, and multiplication by several digits, as well as division by one digit, to practice mathematical reasoning and the relationship between numbers. An initial example shows how to find the value of the third number when the total and the sum of the first two are known.
This workbook is number 16 in the Operacions i Problemes RUBIO (valencià) collection and has A5 format. It corresponds to the first edition, published on January 20, 2018.
It is recommended for children aged 10 to 11 as supplementary math material in primary education.
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