3.3×6.9=22.77
3.33 ×66.9=222.777
3.333×666.9=
......
88.83÷9=9.87
88.884÷9=9.876
1.1×2.2÷2=1.21,
1.11×3.33÷3=1.2321,
1.111×4.444÷4=1.234321,
…
1.111111×7.777777÷7=。
1×0.941 4.25×1.34.25 1.5×2815×2.8
3.68×03.68 7.68×1.987.68 1.2÷0.81.2×0.8
①7.8÷1.27.8
②0.35÷0.0135
③1.01×0.60.6
④ 3.95×0.83.95