1、185.441641.84721.7967.5105230.40.6121.24360.7362343.51235.21739.6246.210.032101.451.30.2791.23.80.7560.180.660.311.971.569.62.938.40.8150.0615.62.93.771.80
2、.02965.220.39.990.024.670.952.441.6666.19.4320.0025.66.54.882.90.614.38.92.45.5559.770.021.3845.18.788312.6610.0590.24.2681.75.75.79.462.8517.86.41.54.9
3、12.50.885.5555.22.223.337.6588536.020.356.788（循环小数的用简便方法，除不尽保留2位小数）：8.20.120.80.976.45.44.731.251.2324214.362.78.336.21.70.032.410.70.3961.2=0.7560.36=15.61.3=
4、0.181.5=0.0251.4=13.0636=0.040.12＝3.842.6≈5.763＝17.152290.753.33.680.2516.90.131.553.93.70.01613.760.8=5.20.618.41.36.40.54.480.415.255
5、35.44.20.0420.540.760.320.250.0462.523.41.08250.120.50.16＝4.80.25＝0.1251.4≈（保留两位小数）2.50.7=（保留三位小数）10.13.3=（商用循环小数）10.7512.5=（用乘法验算）3.259.04=（用除法验算）3能简算的要简算2.57.1416.1299＋16.
6、125.20.9＋0.97.2899+7.284.3500.264－2.640.52615.7＋15.724(2.275＋0.625)0.283.94+34.30.21.2(9.62.4)4.88.91.14.72.75.43.93.69.85-5.468.053.4+7.66.584.50.92.80.5
7、+1.5832＋4.9－0.94.8－4.80.5(1.25－0.125)84.8100.156.599＋56.57.0910.8－0.87.094.85+0.351.48.717.4-8.77.412.50.42.580.873.16+4.649.51010.68（5.2-3.5）1.25
8、40.50.810.184.8（152.4）6.81+6.81990.25185404.40.8－3.40.8(9.37+9．37+9．37+9．37)2．52.376.3+2.373.72.51.250.323.810.12.5(3.80.04)7.691013.810.10.2539+0.250.12572460.33+5
9、40.33(85.27)1.256.81+6.81990.25185406.80.750.53.750.125–2.751.53+23.47.29.59913.50.9812.58.83.80.12=0.570.6=6.40.5=6.75.8=9.83.8=7.86.4=4.62.7=4.52.7=51.6=30.6=
10、31.2=6.77.6=5.47.8=2.63.6=3.51.7=8.32.6=1.40.7=4.52.8=7.42.6=6.21.4=5.42.6=2.31.4=3.71.8=5.21.6=3.60.8=0.661.4=6.55.8=0.720.49=0.420.28=0.240.19=2.41.3=4.52.3=0.720.27=0.780
11、.32=0.650.04=0.230.16=0.290.15=0.160.19=41.2=74.6=60.37=0.280.27=0.750.42=2.31.9=80.64=2.70.8=104.2=7.13.9=4.31.4=2.61.6=0.80.3=0.650.4=0.910.6=1.81.6=4.80.5=3.20.4=9.84.8=
12、128.3=15.26.5=20.111.1=13.3410.32=6.520.48=6.35.1=8.73.6=14.34.3=1.50.54=104.2=2.473.24=2.980.56=5.641.78=8.020.98=7.13.9=2.811.39=12.534.67=7.26.45=1.653.35=7.961.45=601.27=6.074.89=50.41=
13、0.90.5=20.7=1.24.3=5.42.7=62.9=3.71.7=4.20.8=7.52.5=2.24.3=9.57.1=3.51.6=5.22.8=7.81.6=9.64.1=104.2=5.12.5=4.13.4=1.23.8=9.64.1=7.81.6=3.51.6=4.41.4=2.92
14、.1=3.51.2=4.83.4=6.92.5=2.57.8=85.4=6.92.5=23.5=6.82.2=4.75.4=4.18.8=2.25.5=9.62.1=1.73.8=7.43.6=0.80.23=1.62.4=4.73.5=1.23.6=1.53.8=2.81.2=7.32.7=7.32.7=6.23.7=
15、4.23.9=0.540.65=7.55.2=0.70.5=0.320.47=8.36.3=7.20.42=0.480.52=0.80.25=43.50.65=0.320.16=0.350.55=0.870.8=0.240.08=0.920.37=1.40.6=3.64.2=0.720.48=6.83.2=7.13.4=0.420.66=0.320.68=2.87.2
16、=0.650.19=3.091.2=3.255.64=0.250.47=0.820.18=7.82.4=0.450.18=0.40.16=8.21.8=0.730.27=83.2=9.84.8=32.4=2.80.9=1.290.18=5.10.8=100.3=8.94.9=6.80.7=80.72=6.63.4=6.41.3=
17、1.20.8=7.36.2=8.73.6=12.30.7=0.89.2=4.71.9=5.13.9=1.40.6=3.86.4=0.67.45=4.90.1=4.53.2=1.80.9=6.50.5=10.56.5=7.50.5=0.780.28=12.82.8=9.62.3=3.80.12=0.80.08=107.4=7.53
18、.2=0.420.58=0.80.15=2.50.4=8.22.6=1.40.7=2.54.6=0.59.8=6.72.6=7.25.9=8.73.6=5.692.48=2.94.1=9.16.7=2.031.2=8.64.9=1.32.03=9.467.21=1.562.24=3.51.25=0.750.4=200.78=4.84.2=
19、5.73=4.91.7=1.340.8=20.75=8.70.03=0.20.09=8.52.5=3.41.4=0.680.42=7.827.2=29.1=0.480.52=8.15.1=0.780.24=0.80.18=0.890.25=10.98=0.90.1=10.8=4.54=5.64=5.73.3=104.4=66.6=9.52.7=10.55=3.74.8=