30×4<140, 70×7<558,
60×5<342, 40×5<236,
80×1<154, 70×2<201,
50×7<398, 90×2<261,
80×3<300, 60×7<470,
20×8<175 90×6<612, 故答案为:4,7,5,5,1,2,7,2,3,7,8,6.
30×4<140, 70×7<558,
60×5<342, 40×5<236,
80×1<154, 70×2<201,
50×7<398, 90×2<261,
80×3<300, 60×7<470,
20×8<175 90×6<612, 故答案为:4,7,5,5,1,2,7,2,3,7,8,6.