计算题错题整理.doc

计算题错题整理一、直接写出得数0.58= 3.60.4=39.680= 47.61=40.5=120.06= 121.2=330= 0.157= 3.26+3.24=2.540.36=30.9= 0.60.8=6.031000= 100.6= 6.450.01= 0.10.1= 0.240.5= 5.43.6= 1.250.25= 10.24.5 2.5690.25 0.1254= 1.2580.5= 160.01= 1.780.3= 0.270.003= 0.010.1= 1.820= x-0.4x= 5d-2d= 3.60.4= 0.60.82.43 0.120.7 45 1.19=1.60.5 0.20.05 2.52.34= 1.51.51.5= 500.04= 800.3=3.61.22.4= 4.7644.7= 0.540.54=2.50.4= 3.60.4=38.500.38=0.2+0.80.5=二、竖式计算。7.21836 5.930.76（保留三位小数） 16.3251 验算32.08 5.247.2 3.5413 2.7+3.13 得数保留两位小数 验算205.674 5.840.16 5.40.036 811 用循环小数表示商列竖式计算，得数保留一位小数。1.21.4 0.378.4 3.142.8列竖式计算，得数保留两位小数。0.851.12 0.865.4 0.152.34列竖式计算，得数保留一位小数。4014 26.3731 45.538列竖式计算，得数保留一位小数。156035 4.82.3 1.553.9列竖式计算，得数保留一位小数。7.22.1 3.877 146.413列竖式计算，得数保留一位小数。5.636.1 2.840.03 0.3820.13列竖式计算，得数保留两位小数。26.3731 3242 2.840.03列竖式计算，得数保留两位小数。4.823 0.3820.13 4.24.5三、能简算则简算15.89(6.755.89) 5.171.83.2 13.75(6.483.75)5.40.6（2.30.46） 3.687.562.68 9.24（2.83.2）0.5 7.852.340.854.66 35.61.815.67.2 0.2516.2460.9（13.535.37）10.8 4.87.8780.52 4.8100.13.53.50.9 5.861.81.24.14 25.48(9.40.52)4.23.5 17.8(1.784) （102.154.6）8.51.252.532 15.20.254 9.24（2.83.2）0.5 40.50.811.05 （203.472.2）（1.30.2） 97.50.39136.786.40.240.25 11.16（100.7） （30094.8）0.5 6310.1-630.112.63.5（9.88.7） 0.648（0.40.5）0.6 3.21012.311.20.5 994.3 13243.756.3 4.2994.212.78-(4.972.78) 63.42.50.4 0.80.880.224.60.354.60.65 23.40.813.47.2 (1.250.25)42.95101-2.95 4.914 35（0.352） 3.141.931.40.81四、解方程4（x+0.3）=4.8 1.2x-0.8x=9.6 20+x=36 7x-55=59 0.7x=4.212.4x=31 （10-7.5）x=1 X1.8=0.972 0.06X=1.02 0.7(x0.9)=42X0.13=0.7 0.5254x=0.6x3.86=5.4617.89x=12.8980x41240.8x=57.3 x3.25=16.75 50.9x2.75 2x0.4x=48 7.8x2.62x0.828.230.5x762x6x=1835x13x=9.6 1.3x2.43=12.43