3+0=
3+2=
4+1=
5-4=
5-5=
5-2=
0+4=
3+1=
4-2=
3-1=
0+5=
2-2=
4-4=
2+2=
1+2=
4-1=
0+2=
0+0=
4-3=
5-0=
2+3=
40=4
5 0=5
44=0
12=3
42=2
3 1=2