7.6-0.6= 0.8×100= 1.9+9.1= 3.6÷0.9=
7.2÷8= 0.2×0.9= 5.1÷0.01= 4×1.5=
1.4+1.4÷1.4= 8.3×0.9+0.83=
7x÷3=8.19 (3x-4)×5=4
, 6.9×0.016.9÷100,4.35×100.8×43.5
简算依据: