12 +
5
3
3
3 -
1
4
144×
6
2 ÷
2
2
5
9 +
3
6
4
1
4 ÷
1
12 ×
6
4
2
8 +
5
3
4
2
15 ×
5
3
2 ×
1
6
6
18 ×
3
1
1
1 -
6
5
2
9 +
4
6
2 ÷
4
2
3 ×
1
3
5