1+1
2
2+2
4
3+3
6
4+4
8
5+5
10
1x67
67
2x7
14
3x9
27
4x3
12
5x4
40
1-5
-4
2-9
-7
3-10
4-12
-8
5-13
7*1
7
8*2
3*5
0.6
2*4
0.5
5*5
1
4-4
0
10x1
9x8
72
2+3
5
50+70
120