1125﹣997= 998+1246+9989= (8700+870+87)÷87= 125×8.8=
1.3+4.25+3.7+3.75= 17.15﹣(3.5﹣2.85)= 3.4×99+3.4= 4.8×1.01=
0.4×(2.5÷73)= (1.6+1.6+1.6+1.6)×25= (+﹣)÷= =
12.3﹣2.45﹣5.7﹣4.55= ÷2+×= 0.125×0.25×64= 64.2×87+0.642×1300=
78×36+7.8×741﹣7= ×17+×8= ×+0.125×+0.5= 2.42÷+4.58×﹣4÷3=
25÷100= 4.25﹣3﹣(2﹣1)= 3.8÷3.9+3.9÷0.1+0.1÷3.9= 12.1﹣(+)×105=