1×0.9 1 0.1×5.60.56 7.66÷0.99 7.66 3.25×1.23.25 6.71÷0.58 6.71 5.6×0.95.6÷0.9
10.76×0.8 10.76
0.728÷0.89 0.78
1.6÷0.1 1.6×10
8.2÷2.01 820÷201
3.6×1.4= 360×1.4= 50.4÷1.4=。
0.100.1×0.1 2.5÷52.5 3.2÷1.632÷16
720.5=36 720.5=144 72.5=48 721.5=108