Suma: la araña

captura-de-pantalla-2017-02-11-18-47-22

Practica:

13 + 26 =

15 + 23 =

18 + 23 =

69 + 24 =

54 + 33 =

43 + 32 =

24 + 49 =

45 + 36 =

55 + 34 =

82 + 18 =

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