1 + 4 = 51 + 4 = 5
2 + 4 = 62 + 4 = 6
3 + 4 = 73 + 4 = 7
4 + 4 = 84 + 4 = 8
5 + 4 = 95 + 4 = 9
6 + 4 = 107 + 4 = 11
7 + 4 = 118 + 4 = 12
8 + 4 = 129 + 4 = 13
9 + 4 = 13Gran trabajo aprendiendo a sumar de 4 en 4.