小学数学五年级下册口算练习 7.827.2 2.199.1 0.90.18 1871000 0.08110 0.960.8 100.05 0.137 0.21100 0.054 12.58 2.34 0.450 300.1 2.63 4.12 7.50.1 10.08 3.50.01 1.250.25 2 2 3 4 7 5 7 7 8 3 4 4 5 7 10 0.650.2 59 7 9 4 9 1 7 1 9 1.253.30 1 5 1 3 4 5 1 6 1 12 1 6 6.82.43 0.9710.7 0.60.30.5 1.80.90.5 60.1258 10.010.1 254254 203.77.3 37.29937.2