by Lluïsa Girondo Pérez · Editorial Casals · tapa blanda · ISBN 9788421831670
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«Encaix de nombres 7» is the math exercise book by Lluïsa Girondo Pérez, published by Editorial Casals in paperback (32 pages, in Catalan).
Activities to improve mental and written calculation: students work on adding and subtracting 9, complements of tens, addition and subtraction with regrouping, decomposition of the second addend and of the subtrahend, commutative property of addition, calculations with euros, doubles and halves, tables and algorithms for addition and subtraction.
Book number 7 of the Encaix collection, from the Encaix project by Editorial Casals, for the second cycle of primary education. Edition in Catalan.
Suitable for children aged 8 to 10 who want to practice and consolidate mental and written calculation strategies progressively.
