小数乘除法计算试题库.docx
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1、小数乘除法计算题85.441642.847101.7967.515230.465.346.1211.34.538.421.24360.7362343.51235.21739.6240.590.0323.6255.031.656.210.032101.451.30.2791.23.80.7560.18207150190244.20.660.311.971.569.62.938.40.8150.062.27.982.4482505.62.93.771.80.02965.220.39.990.0216.246.7861.921.5660.19984.670.952.441.6666.19.4320.
2、0025.66.54.20312.210.16260.01886436.44.882.95.61x4.38.92.45.5559.770.0214.15224.12321.36302.50.19541.3845.18.78832.6610.0590.24.2681.77.0584728.74158.60.01187.2556575.79.462.8517.86.41.54.92.50.88324.926.961113.927.352.25.5555.22.223.337.6588536.020.356.78828.8867.3926650.9310.806454.24(循环小数的用简便方法,除
3、不尽保存2位小数):8.20.120.80.976.45.44.731.251.268.330.8914.151.571.04324214.362.78.336.21.70.032.410.70.765.321.3456.673.44用竖式计算0.3961.2=0.7560.36=15.6X13=0.18X15=0.332.1202.82.70.02514=3.0636=0.04X0.12=3.84X2.6、0.35110.160.00489.9845.76X3=7.15X2290.753.33.68X0.2517.28157.327.50.9216.90.131.553.93.7X0.016
4、13.76X0.8=1300.3970.059211.0085.20.68.41.36.40.54.480.43.1210.923.21.7925.25535.44.20.0420.540.760.3226.25148.680.022680.24320.250.0462.523.41.08250.120.50.16=0.01158.568270.00964.80.25=0.125X1.4-(保存两位小数)1.2X0.1810.13.3=12.50.7=(保存三位小数)(商用循环小数)3.5713.06060606.10.7512.5=(用乘法验算)3.25X9.04=(用除法验算)0.8629
5、.383、脱式计算(能简算的要简算)2.57.1416.12X99+16.125.2X0.9+0.97116125.587.28X99+7.284.3X500.264-2.64X0.57284362.6826X15.7+15.7X24(2.275+0.625)X0.283.94+34.3X0.27850.81210.81.2(9.62.4)4.88.91.1X4.72.7X5,43.93.69.85-5.46146.01356.862308.05X3.4+7.66.58X4.5X0.92.80.5+1.5834.9726.6492.9832+4.9-0.94.84.8X0.5(1.25-0.1
6、25)8362.494.8X100.156.5X99+56.57.0910.8-0.8X7.09480.48565070.94.85+0.351/18.717.4-8.77.412.50.4X2.585.1871000.87X3.16+4.649.51010.68(5.2-3.5)X1.257.3892959.50.540.50.810.184.8X(152.4)9306.81+6.81990.25185404.40.8-3.4X0.868118500.8(9.37+9.37+9.37+9.37)X2.52.37X6.3+2.373.793.723.72.51.25X0.323.8X10.12
7、.5(3.80.04)7.69101138.380.38776.693.810.10.2539+0.250.12572460.33+540.3338.3810933(85.27)1.256.81+6.81990.25l854052.768118506.80.750.53.750.125-2.751.53+23.47.210.227.254,789.59913.50.9812.58.8940.513.23110解决问题:1 .一台榨油机每小时榨油0.45吨,4台这样的榨油机3.5小时榨油多少吨2 .小华和小川两人同时从乙地分别向甲、丙两地背向而行,小华每小时走3.2千米,小川每小时走2.6千米,
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