Matematica - Ensino Fundamental

Exercıcios - Lista 1

Questoes envolvendo fracoes e representacoes deci-

mais de fracoes1.

Questao 1: Escreva por extenso.

• 317 = Tres dezesseteavos.

• 65 = 5+1

5 = 55 + 1

5 = 1 + 15 = Seis quintos (ou: um inteiro e

um quinto).

• 210

• 5100

• 819

• 16

• 98

• 159

• 25100

1O “post”associado a este documento se encontra no blog http://matematicareplay.wordpress.com,na categoria de Matematica do Ensino Fundamental.

1

• 2244

• 72

• 135

• 11000

• 371000

Questao 2: Escreva a representacao decimal das fracoes abaixo:

• 310 = 0, 3.

• 25100 = 0, 25.

• 2110

• 5100

• 11000

• 101000

• 1001000

• 10100

• 3910

• 2201000

2

• 19110

• 44100

• 361000

• 21000

3

c©2009 Christine Cordula Dantas

Copyright notice: Christine Cordula Dantas is the author of “Matematica - Ensino Funda-mental - Lista 1”and reserves all rights to this work, in all forms, including but not limited toall printed and electronic forms. You have permission to copy this material for your personaluse only. You may not distribute or commercially exploit the content. Nor may you transmitit or store it in any other website or other form of electronic retrieval system. All effortswere given to give the proper source, credits and licence information for this document. Incase of errors or omissions, please contact the author.

Corrections, Suggestions and Acknowledgements: Earlier drafts of this work weremade available over the web. All efforts were made in order to release this material asfree of errors as possible. Corrections and suggestions are very welcomed and will be hereacknowledged in future versions.

Author’s Affiliation and Contact Information:

Materials Division (AMR-C)Institute of Aeronautics and Space (IAE)Department of Science and Aerospace Technology (DCTA)Pca. Mal. Eduardo Gomes, 50Vila das AcaciasSao Jose dos Campos - SPCEP 12.228-904Brazil

E-mails: ccdantas@iae.cta.br; christinedantas@yahoo.com

Typesetting: This material was typeset using LATEX 2ε .

4