Imprimer Compléter: Ejercicios de Sumas (sumas)

8 51 17 65 28 52

8 + 9 = ____________________
42 + 10 = ____________________
54 + 11 = ____________________
26 + 2 = ____________________
31 + 20 = ____________________
70 + 10 = ____________________