48-5 7-25+1 4+36
910-0 8-610-8 75+3
4+( )=8
7+( )=10
6+=10 -2=7 9-=9 +3=9
<1 =0 >3 <10
5+4=
2+6=
8-5=
9-7=
10-9=
6-2=
9+0=
7-6=
7+3=
4-4=
8+2=
3+3=
6-3=
8-2=
1+3=
1+8=
4+3+2=
7-3+2=
5+3-2=
10-0-3=
2+5-4=
9-5-4=
8-1+2=
4+5+1=