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1、20XX试题和答案汇编collection of questions and answers试题练习答案解析小数乘除法计算题 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 2
2、505.62.9 3.771.8 0.0296 5.220.3 9.990.0216.24 6.786 1.92 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
3、.86.4 1.54.9 2.50.88324.926.961 113.92 7.35 2.25.5555.2 2.223.33 7.65885 36.020.3 56.78828.8867.3926 650.93 10.806 454.24（循环小数的用简便方法，除不尽保留2位小数）：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用竖式计算0.3961.2= 0.7560.36= 15.613= 0
4、.1815= 0.33 2.1 202.8 2.70.02514= 3.0636= 0.040.12 3.842.6 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 0.24
5、320.250.046 2.523.4 1.0825 0.120.50.16 0.0115 8.568 27 0.0096 4.80.25 0.1251.4（保留两位小数）1.20.182.50.7= （保留三位小数） 10.13.3= （商用循环小数）3.571 3.06060606.10.7512.5= （用乘法验算） 3.259.04= （用除法验算） 0.86 29.38 3、脱式计算（能简算的要简算）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.
6、724 (2.275 0.625)0.28 3.94+34.30.2 785 0.812 10.81.2(9.62.4)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.
7、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 0.251854052.7 681 18506.80.750.
