1、小數(shù)乘除法計算題 85.4416 42.847 101.79 67.515 230.46 5.34 6.12 11.3 4.5 38.4 21.2436 0.73623 43.512 35.217 39.6240.59 0.032 3.625 5.03 1.656.210.03 2101.4 51.30.27 91.23.8 0.7560.18207150 190 24 4.20.660.3 11.971.5 69.62.9 38.40.8 150.062.2 7.98 2.4 48 2505.62.9 3.771.8 0.0296 5.220.3 9.990.0216.24 6.786 1.

2、92 1.566 0.19984.670.9 52.44 1.6666.1 9.4320.002 5.66.54.203 12.2 10.1626 0.018864 36.44.882.9 5.614.3 8.92.4 5.555 9.770.0214.152 24.123 21.36 302.5 0.19541.3845.1 8.7883 2.661 0.0590.2 4.2681.77.0584 728.74 158.6 0.0118 7.2556 575.7 9.462.85 17.86.4 1.54.9 2.50.88324.926.961 113.92 7.35 2.25.5555.

3、2 2.223.33 7.65885 36.020.3 56.78828.8867.3926 650.93 10.806 454.24（循環(huán)小數(shù)的用簡便方法，除不盡保留2位小數(shù)）：8.20.12 0.80.9 76.45.4 4.73 1.251.268.330.89 14.151.57 1.043242 14.362.7 8.336.2 1.70.03 2.410.70.76 5.32 1.34 56.67 3.44用豎式計算0.3961.2= 0.7560.36= 15.613= 0.1815= 0.33 2.1 202.8 2.70.02514= 3.0636= 0.040.12 3.8

4、42.6 0.35 110.16 0.0048 9.984 5.763 7.1522 90.753.3 3.680.2517.28 157.3 27.5 0.9216.90.13 1.553.9 3.70.016 13.760.8= 130 0.397 0.059211.0085.20.6 8.41.3 6.40.5 4.480.4 3.12 10.92 3.2 1.792 5.255 35.44.2 0.0420.54 0.760.3226.25 148.68 0.02268 0.24320.250.046 2.523.4 1.0825 0.120.50.16 0.0115 8.568 27

5、 0.0096 4.80.25 0.1251.4（保留兩位小數(shù)）1.20.182.50.7= （保留三位小數(shù)） 10.13.3= （商用循環(huán)小數(shù)）3.571 3.06060606.10.7512.5= （用乘法驗算） 3.259.04= （用除法驗算） 0.86 29.38 3、脫式計算（能簡算的要簡算）2.57.14 16.129916.12 5.20.90.971 1612 5.587.2899+7.28 4.3500.2 642.640.5728 43 62.682615.715.724 (2.275 0.625)0.28 3.94+34.30.2 785 0.812 10.81.2(9

6、.62.4)4.8 8.91.14.7 2.75.43.9 3.69.85-5.46 1 46.013 56.862 308.053.4+7.6 6.584.50.9 2.80.5+1.5834.97 26.649 2.98324.90.9 4.84.80.5 (1.250.125)836 2.4 94.8100.1 56.59956.5 7.0910.80.87.09480.48 5650 70.94.85 + 0.35 1.4 8.7 17.4 - 8.7 7.4 12.50.42.58 5.1 87 1000.873.16+4.64 9.5101 0.68 （5.2 -3.5） 1.25 7.3892 959.5 0.540.5 0.81 0.18 4.8 （15 2.4） 9 306.81+6.8199 0.2518540 4.40.83.40.8681 1850 0.8(9.37+9.37+9.37+9.37) 25 2.376.3+2.373.7 93.7 23.72.51.250.32 3.810.1 2.5(3.80.04) 7.69101 1 38.38 0.38 776.693.810.1 0.2539+0.25 0.12572 460.33+540.3338.38 10 9 33(85.27) 1.25 6.81+6.8199 0.