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1、五年級上冊數(shù)學小數(shù) 簡便運算 練習題簡算0.2544.78 0.65201 4.80.25 2.330.541.5105 1.22.5+0.82.5 0.0340.6 1020.450.51.252811 3.22.5 1042.5 1.25（4-0.8）100.199+100.1 630.1 48510.2-48.5 2.69992.53212.5 1.58-99 273-27-73 284-68-84487-187-139-61 1034+78+320+102 308+176+92 12532252512 12572 3200425 1732-17229817+217 （200+4）25

2、210014 103122501250 25184 17.8(1.784) 0.491.4 1.252.53266.868.661.340.2516.24(1.250.125)83.61023.723.56.283.536.83.96.115.613.115.65.62.14.87.8780.52324.90.94.8100.156.59.956.57.0910.80.87.0925.48(9.40.52)4.23.53201.25818.769.918.763.522.50.43.94.16.15.917.8(1.784)9.60.80.44.2994.215.20.2540.89100.1

3、146.5(2346.5)3.834.563.835.444.3612.589.7999.727.53.77.53.78.542.50.40.65101(45.932.7)80.1253.140.6831.40.0325.61.250.82.50.47.20.22.41.48.91.017.74（2.81.3）1.52.263.92.73.97.31.252.53212.79.91.2721（9.33.7）5.615.02-6.8-1.025.411-5.42.316+2.323+2.39.43-（6.28-1.57）3.654.736.50.374657238613.70.253.742.229.9+6.666.71010.87-0.918710.716.1-15.110.70.791993.20.364.81.641.233.40.236.60.253612.7（3.70.84）36.541.764.540.250.7347.60.80.27.60.851990.258.541.288.60.728.612.50.960.810.49.60.350.8（4.31.25）3.123.129928.610128.60.8615.70.8614.72.41022.311.20.5- 2 - / 2