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Sumas: Desafío Medio

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Sumas: Desafío Medio

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Sumas de dificultad media para practicar

Created by

Jeremias Ambrocio
Jeremias Ambrocio
Guatemala

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Sumas: Desafío Medio
 

Sumas: Desafío MedioOnline version

Sumas de dificultad media para practicar

by Jeremias Ambrocio
1

¿Cuál es la suma 247 + 159?

2

Calcula 320 + 275.

3

¿Cuánto es 198 + 402?

4

Suma 143 + 257.

5

Calcula 501 + 299.

6

¿Qué es 76 + 34?

7

Suma 624 + 176.

8

¿Cuánto es 849 + 151?

9

Calcula 390 + 210.

10

¿Sumando 123 + 77 obtienes?

Explicación

La suma 247+159 da 406; 405 y 408 son desviaciones comunes por redondeo.

320+275 = 595; 590 y 585 serían restas de cerca.

198+402 = 600; errores cercanos pueden ocurrir al contar fichas.

La suma da 400; 399/401 son +-1 del resultado.

501+299=800; distractores cercanos.

76+34=110; errores típicos de suma de dígitos.

624+176=800; redondear puede confundir.

849+151=1000; ceros al redondear pueden engañar.

390+210=600; distractores cercano a 600.

123+77=200; errores de desajuste en las decenas.

 
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