6.7×1.2○1.2    3.7×0.65○3.7
4.2×0.6○4.2    0.8×1.4○0.8
3.85×9.5○3.85    9.4×2.5○9.4
0.9×0.9○0.95    5.43×0○5.43
3.5×5.3○5.3×3.5    4.8×0.999○4.8×1.01
1×0.95○0×1.22．