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Sumas y Restas: Desafío medio

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Quiz de operaciones básicas

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Sumas y Restas: Desafío medio
 

Sumas y Restas: Desafío medioOnline version

Quiz de operaciones básicas

by MAXIMILIANO OLIVA | 25447867-9
1

3+3

2

15 + 27 =

3

128 + 57 = ?

4

90 - 33 = ?

5

46 + 29 = ?

6

200 - 125 = ?

7

9 + 8 = ?

8

150 - 47 = ?

9

300 + 150 = ?

10

3+9+3

Explicación

64 menos 19 es 45; los otros son errores de resta inversa o pérdida de una unidad.

La suma de 15 y 27 da 42; los otros resultados son errores de estimación o suma parcial.

128 + 57 = 185; los otros están por debajo o por encima sin sumar correctamente.

90 menos 33 es 57; 63 y 60 superan la resta, 47 es incorrecto.

46 + 29 = 75; los demás son resultados cercanos pero incorrectos.

200 menos 125 es 75; los otros son restas mal efectuadas.

9 + 8 suma 17; los demás son incrementos o decrementos cercanos.

150 menos 47 es 103; los otros son estimaciones cercanas pero incorrectas.

300 + 150 = 450; los demás se apartan de la suma correcta.

500 menos 256 es 244; 256 es la resta que se tomó como incorrecta, 243 y 260 son desviaciones.

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