﹣4.8+3.9=

17﹣18=

1÷0.125=

﹣0.12×25=

12.5×（﹣0.8）=

﹣4.2÷（﹣0.7）=

0÷（﹣4.5）=

﹣4.6﹣（﹣4.6）=

2.5﹣2.5÷0.5=

0.8+0.6×4=