小数乘法简便计算强烈推荐311.docx

1、小数乘法简便计算强烈推荐311514.9+5.1516.41.255.78.1-0.57929.90.041.60.252.40.2512.5287.94.5+7.95.50.250.570.40.25(500+9)82.212.5379.9901.7+983812.53.79.1-0.378310.10.49.52.520.2512.57981.23.6+1.26.4250.4840.23(300+1)84.21.257710.1655.2+6.548412.56.15.1-0.617810.145.92.50.40.2512.5690.874.6+75.42.50.920.040.22(4

2、00+1)8512.5899.9283.3+2.867812.57.43.1-0.746810.10.044.70.251.60.2512.54811.6+18.42.50.6140.24(100+6)82.81.25379.9712.5+7.1757.212.55.67.1-0.568810.146.7250.80.250.12550.83.74.2+3.75.80.250.8340.23(200+3)89.812.5939.9605.4+6464.812.53.66.1-0.36169.90.048.92.52.80.250.125330.816.9+13.1250.830.40.23(5

3、00+6)0.82.31.25159.9751.2+7.5881.60.1258.17.1-0.81189.946252.80.250.125886.76.2+6.73.80.250.9140.22(500+1)87.412.5729.9874.7+8.75381.255.31.1-0.531610.10.043251.20.251.253987.24.1+7.25.9250.750.040.23(100+9)88.712.53610.1155.3+1.5473.20.1259.63.1-0.96479.942.92542.512.58583.29.9+3.20.1250.4740.23(10

4、0+2)0.880.1252210.1643.9+6.4615.60.1258.13.1-0.81119.90.048.10.250.82.512.5430.865.8+64.20.250.890.040.21(300+4)861.252710.1735.5+7.345412.59.83.1-0.98179.90.043.1251.60.250.1257180.24.2+0.25.8250.550.40.22(500+4)0.83.71.258610.1342.5+3.4752.40.12533.1-0.38410.10.0420.251.2251.25560.80.37.6+0.32.425

5、0.5740.22(200+1)87.71.258110.1482.1+4.8794.81.257.12.1-0.71429.90.043.40.253.62.50.1259484.87.2+4.82.8250.4640.24(100+7)0.89.912.56010.1883+8.870412.57.69.1-0.76589.90.46.1253.2251.253180.69.2+0.60.82.50.940.040.21(500+8)0.89.91.258610.1551.3+5.5874.80.1258.87.1-0.888610.10.432.50.40.250.125889.24+9.262.50.920.040.22(300+7)0.87.80.125739.9562.2+5.6782.412.54.33.1-0.432610.10.42.60.251.60.250.1256888.21.9+8.28.12.50.480.40.29(200+2)0.83.11.25989.9275+2.7504.80.1257.99.1-0.798710.10.048.3252.40.2512.55680.54.6+0.55.4