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3) ¿Qué parte del metro es 25 cm ? 4) ¿Qué parte del metro es 10 cm ? 5) ¿Con cuántas tiritas de 10 mm se puede obtener una tira de dm? 6) ¿Cuántas tiritas de 10 cm son necesarias para obtener una tira de 1,50 m?

Ask by Malone Martinez. in Argentina
Mar 21,2025

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3) 25 cm es \(\frac{1}{4}\) de metro. 4) 10 cm es \(\frac{1}{10}\) de metro. 5) Se necesitan \(10\) tiritas de \(10\) mm para obtener una tira de \(1\) dm. 6) Se necesitan \(15\) tiritas de \(10\) cm para obtener una tira de \(1,50\) m.

Solución

3) Para saber qué parte del metro es \(25\) cm, recordamos que \(1\) metro \(= 100\) cm. Entonces, tenemos \[ \frac{25\text{ cm}}{100\text{ cm}} = \frac{25}{100} = \frac{1}{4}. \] Por lo tanto, \(25\) cm es \(\frac{1}{4}\) de metro. 4) De manera similar, para \(10\) cm: \[ \frac{10\text{ cm}}{100\text{ cm}} = \frac{10}{100} = \frac{1}{10}. \] Entonces, \(10\) cm es \(\frac{1}{10}\) de metro. 5) Primero, convertimos las medidas a la misma unidad. Sabemos que \(1\) dm \(= 10\) cm \(= 100\) mm. Si cada tirita mide \(10\) mm, para obtener una tira de \(1\) dm (es decir, \(100\) mm) se requieren: \[ \frac{100\text{ mm}}{10\text{ mm}} = 10 \text{ tiritas}. \] 6) Convertimos \(1,50\) m a centímetros: \[ 1,50\text{ m} = 150\text{ cm}. \] Si cada tirita mide \(10\) cm, entonces el número de tiritas necesarias es: \[ \frac{150\text{ cm}}{10\text{ cm}} = 15 \text{ tiritas}. \]

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Mind Expander

Imagina un metro como una regla gigante. 25 cm representa un cuarto del metro, lo cual es como decir que tienes un cuarto de pizza: ¡sigue siendo bastante sabroso! Por otro lado, 10 cm es una décima parte del metro, o simplemente el tamaño de una pequeña planta en un macetero. Ahora, si hablamos de cortar tiras, una tira de 1 decímetro (dm) equivale a 100 mm. Así que, si tienes tiras de 10 mm, necesitarías 10 de ellas para hacer 1 dm. Y para la tira de 1,50 m, que es igual a 150 cm, necesitarás 15 tiras de 10 cm. ¡Es como un trabalenguas con cifras!

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