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-小数简便计算题100道-第 4 页4.865.241.86 8.13(1.870.5)14.69.9 1.91.991.999 19.43(6.721.43)21.534.872.53 15.21(4.792.8)12.192.62.193.4 109.72(5.629.72)0.1253.698 (2.50.25) 4 8.591010.63199 6048 7.730.52.2728.63250.063250 9.310.1 3.990.12580.990.810.1190.19 (5.235.235.235.23) 250.251.250.6732 2.493.80.249623.874.125.883.87 8.85.5 3.251994.340.250.255.560.025 (7.254) 0.9 8032 7.56101 1.252.5(84)