1.5-0.5=
1.2-0.6=
4.3-1.2=
1-0.9=
3.7+2.5=
5.0+8.2=
2.3+0.6=
0.3+0.7=
4.3-3.8=
0.9+0.8=
1.9-0.7=
3.5-2.8=
1.9-0.9=
2.4+1.6=
1.2+3.9=
3.5-2.4=
3.5-2.7=
2.5+3.2=
0.36+0.64=
4.6+1.8=
0.7+0.8=
0.96-0.3=
5.4-3.2=
9.3-2.5=
1.2+3.9=
1.8+2.5=
4.5+2.2=
1.8+3.4=
9-7.1=
5.8-4.7=
n
0
1
2
3
4
5
6
……
2n