by Equipo Santillana · Santillana · tapa blanda · ISBN 9788429416343
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«Números y operaciones 18» is the math workbook by Equipo Santillana, published by Santillana in paperback (16 pages, in Spanish).
A school workbook designed to reinforce basic math skills at the elementary education stage. Through practical, structured exercises, it covers knowledge of numbers and fundamental arithmetic operations, as part of a pedagogical series aimed at fixing these concepts.
Number 18 in the «Números y operaciones» series. 1989 edition, ISBN 842941634X.
Suitable for elementary education students who need to practice numbers and basic operations.
