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by Roger K. Daneth (Author)
This book shows how to do mental math with methods designed to simplify basic math for fast and easy calculations. Basic operations covered are addition, subtraction, multiplication, and square roots. Example problems are completed with answers for practice and improving your memory. Large and small number problems are included with real life sample problems. Exact and fast approximation techniques are shown.
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A small yet very thoughtful devotional book. A beautiful way to promote seeing God everyday in everything.
It’s a great item, exactly what i was expecting 😊
Está perfecto con muchas páginas para dibujar
Llego bien gracias.
