4+4= 6+2= 8-7= 4+5=
8-6= 10-4= 1+9= 10-8=
7-3= 6+3= 10-2= 1+5=
10-7= 9-8= 2+5= 8+0=
3+6= 9-0= 10-5= 8-3=