Memory Game Add and Subtract Within 10Online version I can add and subtract within 10 memory game. by Lu Lisa 2+1 3+4 4+4+4 2 3+3+2 3 8 5+5 2+0 7 9 4+1 3+3 11 1+0 2+2 6+5 10 5 4 12 4+5 1 6