Froggy Jumps Sumas y restas para niñosOnline version Sumas y restas by Jose Augusto Marrufo 1 3 + 3 a 6 b 7 c 3 2 10 + 1 a 11 b 12 c 14 3 10 + 1 a 11 b 12 c 14 4 5 + 5 a 10 b 9 c 6 5 5 + 6 a 11 b 12 c 10 6 4 + 4 a 8 b 6 c 4 7 1 + 1 a 2 b 4 c 3 8 10 - 5 a 5 b 4 c 6 9 3 - 2 a 1 b 2 c 5 10 5 - 4 a 1 b 3 c 9 11 2 - 1 a 1 b 3 c 2 12 3 - 1 a 2 b 3 c 5 13 6 - 4 a 2 b 4 c 3 14 10 - 8 a 2 b 4 c 18