subtract
1.86-1.56
1.30 Or 1.3
1.4+1.3
2.7
1.5x1.6
2.4
2.8/1.6
1.75
2+2
4
1.50-1.30
0.20 or 0.2
7.1+1.8
8.9
2x1.5
3
3/1.5
2
1x2x3
6
1.8-1.5
0.3
2.6+1.3
3.9
6x2.5
12.5
45.0/5
9
9x5
45
2.7-1.2
1.5
6.7+9.0
15.7
7x8.5
56.5
2.0/1
2
6.0x10
60.0
8.6-1.4
7.2
9.8+9.8
18.16
9.0x5
45
40.0/8
5
60/6
10.0