第 7 页精品文档---下载后可任意编辑小学四年级小数乘除法计算题 300 道 1、185.441641.84721.7967.5105230.40.6121.24360.7362343.51235.21739.6246.210.032101.451.30.2791.23.80.7560.180.660.311.971.569.62.938.40.8150.0615.62.93.771.80.02965.220.39.990.024.670.952.441.6666.19.4320.0025.66.54.882.90.614.38.92.45.5559.770.021.3845.18.788312.6610.0590.24 2、.2681.75.75.79.462.8517.86.41.54.912.50.885.5555.22.223.337.6588536.020.356.788〔循环小数的用简便方法，除不尽保存 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=0.181.5=0.0251.4=13.0636=0.040.12＝3.842.6≈5.763＝17.152290.753.33.680.2516.90.131 3、.553.93.70.01613.760.8=5.20.618.41.36.40.54.480.415.25535.44.20.0420.540.760.320.250.0462.523.41.08250.120.50.16＝4.80.25＝0.1251.4≈〔保存两位小数〕2.50.7=〔保存三位小数〕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＋16.125.20.9＋0.97.2899+7.284.3500.264－2.640.52615 4、.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+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〕1.2540.50.810.184.8〔15 5、2.4〕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+540.33(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. 6、8=7.86.4=4.62.7=4.52.7=51.6=30.6=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=0.780.32=0.650.04=0.230.16=0.290.15=0.160.19=41.2=74.6=60.37=0.280.27=0. 7、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=128.3=15.26.5=20.111.1=13.3410.32=6.520.48=6.35....
