1、0.038.99.771.35.11.75.75.72.55.5555.22.223.337.6588536.020.356.78835.222.441.6669.4320.0021.3844.2681.31.54.95.36.39.91.49.1 5.594.81.6572.50.884.47.3 6.40.670.25.64.63.83.82.31.89.61.74.79.84.34.28.49.16.18.68.97.79.92.98.21 0.0590.217.86.40.15.30.54.6229.570.41.9 12.17.927.50.37.63.493.93.77185.44
2、1641.8421.767.5105230.40.6121.24366.210.6615.643.51251.30.2769.66.1 35.217 91.238.40.84.880.618.9558.20.876.45.44.73324214.362.78.336.21.781.251.22.410.70.0599.462.851.50.3961.2=0.7560.36=1.3=16.90.130.250.04635.44.23.70.01625 3.680.250.7617.15222.523.46.40.513.760.8=0.120.1615.2553.9 18.490.753.30.
3、0420.544.480.41.55 1.082.50.7= （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）36.020.3（循环小数的用简便方法，除不尽保留 2 位小数）：3、脱式计算（能简算的要简算）0.90.97.14 16.129916.127.2899+7.284.350642.642615.715.724（2.275 0.625）0.280.83.43.94+34.3（9.62.4）1.16.584.52.80.5+1.584.8 （15 2.4）324.90.94.84.8（1.250.125）100.156.59956.57.0910.80.87.09
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