Página — Matematica 6° Primaria (pág. 57)

Resolvemos problemas con fracciones

Urpi elaboró un panel decorativo con 2\frac{1}{2} pliegos de cartulina para el fondo,1\frac{2}{3} de pliego para el borde y \frac{5}{6} de pliego para el diseno interior. Si al inicio tenía medio pliego, jcuántos pliegos de cartulina tuvo que comprar?

a. Completen el procedimiento que sigue Urpi para resolver el problema.

2\frac{1}{2}+1\frac{2}{3}+\frac{5}{6}

\frac{5}{2}+\frac{1}{3}+\frac{5}{6}-\frac{1}{2}

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=\frac{27}{6}=\frac{9}{2}=\begin{aligned}\bigotimes\\ \bigotimes\\ \bigotimes\end{aligned}

b. Recuerden, antes de responder, lean de nuevo la pregunta.

Para cubrir el piso de una habitación, se han comprado tres rollos iguales de tapizón.Del primer rollo se ha usado \frac{5}{6} ,de otro rollo se ha usado 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jAlcanzará lo que sobró para reemplazar una parte del tapiz dañado de otra habitación equivalente a \frac{3}{4} de rollo?

a. Comenten.i Q U é resolverán primero?, iqué datos usarán? Luego, iqué sigue?

b. Planteen una operación combinada para calcular cuánto tapiz sobró.Resuélvanla, siguiendo los pasos de las operaciones combinadas.




Matemática 6

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