Rauen, Amy2017-11-132017-11-13978-0-8368-8994-9 (lib.bdg.)0-8368-8994-0 (lib.bdg.)978-0-8368-8994-4 (softcover)0-8368-8999-1 (softcover)https://centroderecursos.educarchile.cl/20.500.12246/18163Texto para practicar conteo y lectura de números hasta 20.Copyright © 2008 by Gareth Stevens, IncLibroEducación BásicaMatemáticasMatemáticaAll rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the copyright holder.Números y operaciones