1、一、計(jì)算題30分1、直接寫(xiě)出得數(shù)。0.452.50.81.250.33.60.30.3100.070.31.40.0570.920.40.20.260.1440.020.11.20.30.20.48.21.10035.222.34.50.42.450.2243.2500.90.523.99103.52=12.548810=10-1.8-7.2=0.43+3.57=2.5412=0.90.8=1.05100=10.5=0.963=1.470.7=5.46=0.16.510=0.56100=3.78100=40.8=3.215100=0.810=4.08100=1.10.2=0.60.8=30.9

2、=2.50.4=3.60.4=12.58=500.04=800.3=1.19=0.1651.782.2=9.60.6=1.20.5-0.4=0.70.01=2.50.4=123.9=1.2581.25=6.60.66=5.370+4.63=3.92.034.23.51.6+2.40.3=2.140.92745673=0.30.3=7.22.80.90.01120.3=2.870.71340.960.31.50.470.252.50.70.8=82.5161.65.61.01=82.50.250.360.6464.32164.20.172.80.88.44.213.89.92.42.50.050

3、.82.560.371.250.80.5122.51.2333.21.63.53.5319.628.82.2=0.7541.50.2540.50.8=8.40.2=1.60.27.20.3=2.80.30.90.15=1.80.4=5.50.55=0.08100=2.20.11=5.464.54=12.50.8=0.350.3=1.45=2.84=19.64=22.54=12、用豎式計(jì)算0.3961.2=0.7560.36=15.613=0.1815=0.02514=3.0636=0.040.123.842.65.763保存一位小數(shù)7.152290.753.33.680.2516.90.131

4、.553.93.70.01613.760.8=5.20.68.41.36.40.54.480.45.255235.44.20.0420.540.760.320.250.0462.523.41.08250.120.50.164.80.250.1251.4保存兩位小數(shù)2.50.7=保存三位小數(shù)10.13.3=商用循環(huán)小數(shù)10.7512.5=用乘法驗(yàn)算3.259.04=用除法驗(yàn)算33、脫式計(jì)算能簡(jiǎn)算的要簡(jiǎn)算2.57.1416.129916.125.20.90.97.2899+7.284.3500.2642.640.52615.715.724(2.2750.625)0.283.94+34.30.22.

5、75.43.91.2(9.62.4)4.88.91.14.76.584.50.93.69.85-5.468.053.4+7.62.80.5+1.584.84.80.54324.90.9(1.250.125)856.59956.54.8100.17.0910.80.87.094.85+0.351.412.50.42.580.873.16+4.649.51010.685.2-3.51.258.717.4-8.77.440.50.810.184.8152.42.13.0.82576.81+6.81990.25185404.40.83.40.85(9.37+9.37+9.37+9.37)2542.1.254.21.752.376.3+2.373.72.51.250.323.810.12.5(3.80.04)7.691013.810.10.2539+0.250.12572460.33+540.33(85