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Matematica - Ensino Fundamental
Respostas - Lista 1
Questoes envolvendo fracoes e representacoes deci-
mais de fracoes1.
Questao 1: Escreva por extenso.
• 317 = Tres dezessete avos.
• 65 = 5+1
5 = 55 + 1
5 = 1 + 15 = Seis quintos (ou: um inteiro e
um quinto).
• 210 dois decimos.
• 5100 cinco centesimos.
• 819 oito dezenove avos.
• 16 um sexto.
• 98 = 8+1
8 = 88 + 1
8 = 1 + 18 = Nove oitavos (ou: um inteiro
e um oitavo).
• 159 um cinquenta e nove avos.
1O “post”associado a este documento se encontra no blog http://matematicareplay.wordpress.com,na categoria de Matematica do Ensino Fundamental.
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• 25100 vinte e cinco centesimos.
• 2244 vinte e dois, quarenta e quatro avos.
• 72 = 2+2+2+1
2 = 22 + 2
2 + 22 + 1
2 = 1 + 1 + 1 + 12 = Sete meios
(ou: tres inteiros e um meio).
• 135 = 5+5+3
5 = 55 + 5
5 + 35 = 1 + 1 + 3
5 = Treze quintos (ou:
dois inteiros e tres quintos).
• 11000 um milesimo.
• 371000 trinta e sete milesimos.
Questao 2: Escreva a representacao decimal das fracoes abaixo:
• 310 = 0, 3.
• 25100 = 0, 25.
• 2110 = 2, 1.
• 5100 = 0, 05.
• 11000 = 0, 001.
• 101000 = 0, 010.
• 1001000 = 0, 100.
• 10100 = 0, 10.
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• 3910 = 3, 9.
• 2201000 = 0, 220.
• 19110 = 19, 1.
• 44100 = 0, 44.
• 361000 = 0, 036.
• 21000 = 0, 002.
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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
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