(6.8-6.8×0.55)÷8.5=
0.12× 4.8÷0.12×4.8=
（3.2×1.5+2.5）÷1.6=
3.2×（1.5+2.5）÷1.6=
6-1.6÷4=
5.38+7.85-5.37=
7.2÷0.8-1.2×5=
6-1.19×3-0.43=
6.5×（4.8-1.2×4）=
0.68×1.9+0.32×1.9=
10.15-10.75×0.4-5.7=
5.8×（3.87-0.13）+4.2×3.74=
32.52-（6+9.728÷3.2）×2.5=
（7.1-5.6）×0.9-1.15] ÷2.5
5.4÷[2.6×（3.7-2.9）+0.62]=
12×6÷（12-7.2）-6=
12×6÷7.2-6=
0.6×（1.7－0.9）÷0.24+1.25=(6.8-6.8×0.55)÷8.5=
5.4×[（2.73＋1.85）÷2.29]-3.56=
0.12× 4.8÷0.12×4.8=
（3.2×1.5+2.5）÷1.6=
3.2×（1.5+2.5）÷1.6=
6-1.6÷4=
5.38+7.85-5.37=
7.2÷0.8-1.2×5=
6-1.19×3-0.43=
6.5×（4.8-1.2×4）=
0.68×1.9+0.32×1.9=
10.15-10.75×0.4-5.7=
5.8×（3.87-0.13）+4.2×3.74=
32.52-（6+9.728÷3.2）×2.5=
[（7.1-5.6）×0.9-1.15] ÷2.5=
5.4÷[2.6×（3.7-2.9）+0.62]=
12×6÷（12-7.2）-6 =
12×6÷7.2-6=