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Rápido Cálculo Mental 5to

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Desafío rápido de cálculo mental

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Rápido Cálculo Mental 5to
 

Rápido Cálculo Mental 5toOnline version

Desafío rápido de cálculo mental

by Jennifer Matías
1

¿Cuánto es 48 + 27?

2

¿Cuánto es 9 × 8?

3

¿Cuál es la mitad de 250?

4

¿Cuánto es 25% de 100?

5

¿Qué fracción equivale a 0.5?

6

Completa la sucesión: 5, 10, 15, 20, ___

7

Si una playera cuesta $200 y tiene 50% de descuento, ¿cuánto pagarás?

8

¿Cuál es mayor?

9

¿Cuánto es 360 ÷ 9?

10

¿Qué número falta? 3, 6, 12, 24, ___

Explicación

La suma es 75 (48+27). Evita cálculos escritos.

9×8 es 72; memorización de la tabla ayuda.

Mitad de 250 es 125, dividir entre dos.

25% de 100 es 25.

0.5 equivale a 1/2.

La secuencia suma 5 cada vez.

Descuento del 50% equivale a pagar la mitad.

0.75 es mayor que 0.7, 0.5 y 0.25.

360/9 = 40.

Patrón: cada término se duplica.

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