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Desafío: sumas y restas de 2 dígitos

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Desafío: sumas y restas de 2 dígitos

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Operaciones de dos dígitos

Created by

Norma Julissa Cardona Cordova
Norma Julissa Cardona Cordova
El Salvador

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Desafío: sumas y restas de 2 dígitos
 

Desafío: sumas y restas de 2 dígitosOnline version

Operaciones de dos dígitos

by Norma Julissa Cardona Cordova
1

Qué resultado da 47 + 28

2

Calcula 56 - 29

3

Resuelve 68 + 19

4

Determina 90 - 45

5

Qué da 33 + 58

6

Calcula 74 - 26

7

Resultado de 41 + 37

8

Resuelve 59 - 14

9

Qué da 26 + 63

10

Calcula 80 - 29

Explicación

La suma correcta es 75; 65, 83 y 72 son distractores.

56-29=27; 37, 17 y 25 no coinciden con la resta.

68+19=87; las otras opciones no son la suma correcta.

La resta da 45; las demás no son equivalentes.

33+58=91; distractores: 81,93,89.

74-26=48; opciones erróneas no compaginan con la resta.

41+37=78; otros valores no son la suma.

59-14=45; distractores no coinciden.

26+63=89; incorrectos: 79,92,85.

80-29=51; otros valores no cumplen la resta.

 
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