Froggy Jumps math frogOnline version Learn addition and subtraction with frog by Choirul nur Khasanah 1 1+1= a 3 b 4 c 2 2 2+2= a 3 b 5 c 4 3 3+3= a 6 b 2 c 4 4 4+4= a 8 b 7 c 6 5 5+5= a 10 b 9 c 8 6 6+6= a 12 b 10 c 9 7 7+7= a 13 b 12 c 14 8 8-8= a 0 b 15 c 14 9 9-5 a 3 b 4 c 2 10 10-5 a 3 b 2 c 5