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PRATICANDO COM FRAÇÕES
PROBLEMA 1(Quociente)
Três meninas dividem uma torta e dois meninos também dividem uma torta igual a das meninas.   1. Cada menina vai comer o mesmo tanto que cada menino? Por que?    2 Que fração as meninas vão comer? E os meninos?  3. Qual a maior fração?
PROBLEMA 2(Medida)
Na segunda-feira você misturou 3 litros de tinta branca e 3 litros de tinta azul.  Na terça-feira você misturou 2 litros de tinta branca e 2 litros de     tinta azul.
1. A mistura vai ficar da mesma cor nos dois dias? 2. Por que?  3. A quantidade de tinta azul corresponde a que fração da mistura feita na segunda-feira? 4. E na terça-feira?
PROBLEMA 3(medida)
Uma farmacêutica mistura groselha num remédio de tosse.Para melhorar o gosto do remédio, que é muito amargo, ela usa uma colher do remédio e 4 de groselha, criando uma nova mistura.  Que fração de groselha existe na nova mistura?
PROBLEMA 4(parte-todo)
Na figura abaixo, que fração representa a parte pintada de azul em relação à figura toda? Ainda com relação à mesma figura, que fração representa a parte pintada de azul em relação à parte pintada de branco?
Que fração da figura toda está pintada de azul?
E dessa figura? Que fração da figura toda representa a parte pintada de azul?
PROBLEMA 5(número)
Maria e Paulo receberam uma barra de chocolate de mesmo       tamanho cada um. Maria comeu 1/4 do chocolate dela e Paulo comeu 1/2 do chocolate dele. Quem comeu mais chocolate, Maria ou Paulo?
PROBLEMA 6(quociente)
Observem as figuras 1 e 2, onde todos os bolos são de igual tamanho. Em ambas as festas, as crianças repartiram entre si o que há para comer e comerão tudo de uma única vez.  a) As 9  crianças comerão a mesma quantidade de bolo? b) Que fração representa a divisão do bolo na figura 1?  c) Que  fração representa a divisão do bolo na figura 2?                                                                   Figura 1                 Figura 2
PROBLEMA 7(operador)
Observem a figura abaixo e depois respondam as questões seguintes: a)João ganhou 1/3 das bolinhas de gude. Quantas bolinhas ele ganhou? b) Luís ganhou 2/3 das bolinhas de gude.  Quantas bolinhas ele ganhou?
http://www.diaadiaeducacao.pr.gov.br/diaadia/diadia/arquivos/File/conteudo/artigos_teses/MATEMATICA/artigo_magina_e_campos_fracao.pdf REFERÊNCIAS

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