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Aula: Agrupaciones de 10 en 10

Quiz

Played 113 %Accuracy 85 Average time 02:16

About this activity

Explora decenas y unidades

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El Salvador

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Aula: Agrupaciones de 10 en 10
 

Aula: Agrupaciones de 10 en 10Online version

Explora decenas y unidades

by Samuel Guerrero Vanegas Guerrero Vanegas
1

¿Qué representa una agrupación de 10 objetos?

2

Si tienes 3 decenas, ¿cuántos objetos hay en total?

3

En el sistema decimal, a qué grupo pertenece 50 objetos?

4

¿Qué significa 'descomponer' 42 en decenas y unidades?

5

¿Cuántas decenas hay en 86?

6

¿Qué representa el dígito de las decenas en un número como 57?

7

Si juntas 7 decenas y 6 unidades, ¿cuántos objetos tienes?

8

El número 34 está formado por:

9

¿Qué cambio se observa al agrupar 9 decenas con 4 decenas?

10

¿Qué representa la cifra de las decenas en 128?

Explicación

Una decena equivale a 10 objetos, una unidad es 1, una centena es 100 y un millar 1000.

3 decenas = 3 x 10 = 30 objetos.

50 es 5 decenas, es decir, 5 grupos de 10. No es una unidad.

42 se descompone como 4 decenas (40) y 2 unidades (2).

86 contiene 8 decenas (80) y 6 unidades.

En 57, el 5 está en la posición de decenas, es decir, 5 decenas.

7 decenas = 70 y 6 unidades = 6; 70+6 = 76.

34 se descompone en 3 decenas (30) y 4 unidades (4).

9 decenas + 4 decenas = 13 decenas = 1 centena y 3 decenas.

En 128, el 2 está en la posición de decenas (20).

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