1,原式=0.75+2.5+0.125-1=2.375
2,=-40-28+19-24+32=-41
3,=-2.1+3.2-2.4-5.3=-6.6
4,=-8-8=-16
5,=-8+8=0
6,=8+8=16
7,=0+6=6
8,=28+74=102
9,=-3.8-7=-10.8
10,=-5.9+6.1=0.2
1,原式=0.75+2.5+0.125-1=2.375
2,=-40-28+19-24+32=-41
3,=-2.1+3.2-2.4-5.3=-6.6
4,=-8-8=-16
5,=-8+8=0
6,=8+8=16
7,=0+6=6
8,=28+74=102
9,=-3.8-7=-10.8
10,=-5.9+6.1=0.2