Addition is children or primary school students to understand mathematics entrance, so pleasant understand addition and subtraction can make children or primary school students interest in mathematics. Learning knowledge in a game is accord with children's characteristics. This game use instant feedback reward system, make the children happy to understand and remember the following addition table. 1+1=2 2+1=3 2+2=4 3+1=4 3+2=5 3+3=6 4+1=5 4+2=6 4+3=7 4+4=8 5+1=6 5+2=7 5+3=8 5+4=9 5+5=10 6+1=7 6+2=8 6+3=9 6+4=10 6+5=11 6+6=12 7+1=8 7+2=9 7+3=10 7+4=11 7+5=12 7+6=13 7+7=14 8+1=9 8+2=10 8+3=11 8+4=12 8+5=13 8+6=14 8+7=15 8+8=16 9+1=10 9+2=11 9+3=12 9+4=13 9+5=14 9+6=15 9+7=16 9+8=17 9+9=18
