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Números decimales

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Números decimales

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Juego sobre decimales

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Números decimales
 

Números decimalesOnline version

Juego sobre decimales

by Dorelys Guarache
1

Introducción

Los números decimales expresan cantidades por debajo de la unidad, usando la coma decimal para separar la parte entera de la fracción.

2

Definición

Un decimal representa una fracción mediante potencias de diez, donde cada dígito indica la cantidad en cada posición después de la coma.

3

Puestos decimales

Las posiciones decimales se leen desde la unidad hacia la derecha: decenas, centenas, décimos, centésimos, milésimos, etc.

4

Lectura en voz alta

Para leer un decimal, se afirma la parte entera y luego se dicen los decimales por dígitos: tres coma catorce.

5

Entre 0 y 1

Los decimales entre 0 y 1 comienzan con 0, seguido de decimales como 0,25 o 0,007.

6

Decimales finitos

Un decimal finito tiene una cantidad de decimales concluida, por ejemplo 2,50, que equivale a 2,5.

7

Decimales repetidos

Los decimales repetidos presentan una secuencia que se mantiene, como 0,333... que es 1/3 en forma decimal.

8

Redondeo

Redondear implica estimar el número al valor más cercano según la cantidad de decimales deseada: tras dos decimales, 1,449 pasa a 1,45.

9

Operaciones básicas

Sumar, restar, multiplicar o dividir decimales requiere alinearlos por la coma y mantener suficiente precisión para cada resultado.

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