5×5-1=
41-7=
12÷4=
4-4=
90-30+20=
8÷4=
7÷1=
3×4-4=
3×5=
6×3=
35+30+5=
2×6-6=
2×9=
16÷4=
48÷8=
25+57=
42÷7=
54÷6=
6×5=
63-9=
27÷3=
5×7=
21+79=
3×7=
( )