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Contenido: ¿Qué es un número decimal?, ¿Cuáles son los elementos de un número decimal?, ¿Cómo se clasifican de los números decimales?, Número decimal exacto o limitado, Número decimal inexacto: Periódico Puro, Periódico Mixto.
» Ver: Matemáticas | Cultura General
✍ Un número decimal, es el resultado que se obtiene de dividir el numerador y el denominador de una fracción.
Ejemplos:
1) 3/4 = 0,75
2) 4/9 = 0,444...
3) 7/6 = 1,1666...
Los elementos de un número decimal son:
→ Parte entera: Situada en parte izquierda de la coma.
→ Parte decimal: Situada en parte derecha de la coma.
→ Coma decimal: Separa la parte entera de la parte decimal.
Por ejemplo:
Observa el número 45,436.
→ 4 y 5 son sus cifras enteras.
→ 4, 3 y 6 son sus cifras decimales.
Los números decimales se clasifican de acuerdo al número de cifras en la parte decimal.
Por ejemplo:
1) Número decimal exacto: También denominado limitado.
2) Número decimal inexacto: También denominado ilimitado, conformado por:
→ El número decimal periódico puro.
→ El número decimal periódico mixto.
El número decimal exacto se genera cuando la cantidad de cifras de la parte decimal es limitado.
Ejemplos:
1) 2,45
2) 0,6264
3) 8,77777
El número decimal periódico puro se genera cuando el período se inicia después de la coma decimal.
Ejemplos:
1) 2,3333... 2,3
2) 0,484848... 0,48
3) 12,32413241... = 12,3241
El número decimal periódico mixto, se genera cuando el período no se inicia después de la coma decimal, en este caso la parte decimal tiene una parte no periódica seguida de una parte periódica.
Ejemplos:
1) 3, 2141414….= 3,214
2) 0,46262…= 0,462
3) 8,4263263…= 8,4263
✍ Cítanos: Carpetapedagogica.com (2020). "Números Decimales".
Artículos educativos:
Curso: Matemáticas
Descripción: Blog educativo de matemáticas contiene artículos educativos de aritmética, álgebra, geometría y trigonometría.
Categoría: Material educativo.
Recurso: Cultura General.
Contenido: Cúmulo de saberes sobre diversos temas o materias, sobren diferentes aconteceres de la humanidad.
Curso: Cultura General.
Portal Educativo: Escolar.
Contenido: Artículos Educativos.
Nivel educativo: Secundaria., Año: 2020.
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