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1、一、能用简便的要简便计算12.340.25 12.969.61.528510.11.20.251.34 1030.25 4.86.48 3512540.50.811.05 34.50.03+34.50.97203.472.21.30.284.312.5 97.50.39136.7 2.510286.40.240.254.228 11.16100.70.8 30094.80.50.12516 12.63.59.88.7 3.25.611.4 0.6480.40.50.65.74995.74891.14.7 4.753.252.47.6 2.75.43.93.81.418.20.73.69.85-
2、5.46 4.80.25 8.053.4+7.64.710.2 6.584.50.9 7.63997.632.80.5+1.586.732.561.443.2785.2+3.83.8+3.8 2.372.54 2.5 1.5102 9.8254 2400160.5320.250.125 2.83.23.27.2 7.40.152.8 3.760.250.490.008+0.9251.28 0.254.784 7.81.340.65201 7.20.90.017.2 1.22.50.82.58.610.1 2.57.14 5.6 16.129916.12 0.91 0.4 5.20.90.98.
3、254.08+0.754.08+4.08 4.3500.2 4.325.436.68 642.640.515.176.83.2 2615.715.724 12.75 0.28 1.273.90.7316.1 3.94+34.30.2 12.84.95.1 1.24.86.750.93.758.91.14.7 1.341.83.660.22.75.43.9 0.960.280.040.72 3.69.85-5.46 12.78-8.053.4+7.6 31.70.50.71.65 6.584.50.9 35.72- 4.9-5.72+5.12.80.5+1.581113.672.83.677.2
4、 324.90.9 12.56.3+271.25+0.1250.014.84.80.5 3.1+25.78+6.9 815.25+4.72+4.75+5.28 4.8100.1 34.8256.59956.5 7.28+0.94+2.72+0.06 7.0910.80.87.097.84+0.730.84 4.85 + 0.35 1.4 6.399+6.3 8.7 17.4 - 8.7 7.4 15.74.35.7 12.50.42.58 1.6+0.41.6+0.4 0.873.16+4.64 62.82.50.49.5101 7.399 0.68 5.2 -3.51.25 8 40.5 0
5、.81 0.18 9.421094.20.94.8 15 2.41.82.48+1.521.8-0.5 213.0.82578.76+0.43.62.5+1.246.81+6.8199 6.5+2.980.2518540 4.75+8.4404.40.83.40.825 0.1257.91642.1.1.1.752.48+1.57.522.376.3+2.373.7 12.773-4.5+9.232.51.250.32 0.8+3.21.253.810.124-5.4+2.5 2.18+4.65+7.82+5.35+12.5 7.69101 -3.833.810.14 0.2539+0.25
6、35.245.6+45.663.8+45.60.12572 12.253.10.856.17460.33+540.331.91.90.93.82.8二、用竖式计算1.8+0.02= 5.7632.087.5=0.430.28= 0.720.9= 90.753.3 1.052.4= 4.60.6=0.20.01=16.90.13 1.890.54= 3.080.43= 0.2540= 3.70.0165.616.1=5.2229= 1.250.8=5.20.6 6.210.3= 13.953.1=5.566=6.40.5 1.30.9 5.930.767.80.35=5.255 21.840.7
7、 32.08 8.40.25=0.0420.54 28.146.7 3.5413 0.250.046 0.3961.2= 205.674 6.847.45 1.082515.613=5.40.036 36.722.40.1251.40.02514= 5.7785.4= 110.70.5410.13.3= 0.040.121.50.25= 1.2040.43= 3.259.04= 61.2=9.22.3=3.50.2= 7.1522 18.90.54= 6.450.73= 4.8 + 2 = 1.553.9 0.358.6= 1.526.7=3.524=8.41.3 540.36=7.21836
8、 4.2524=35.44.2 0.4621.45.247.2 5.247.2 2.523.4 0.7560.36= 5.840.16 87.113.12.50.7= 3.0636=8.023.5= 1-0.01= 3.680.251.441.8=8.90.05= 7.61.05=4.480.4 5.860.2416.32515.560.834.80.250.1815= 8116.5-5.6= 13.760.8= 9.580.23= 18.723.6= 2.840.05 = 10.7512.5= 3.842.628.565.1= 0.420.308 0.760.32 4.323.62.7+3.
9、13 三、速算与巧算5.8+2.32+0.68+4.21999+199.9+19.99+1.9998.1+7.8+8.2+8.4+7.9+7.7185.58.881.2534.70.252381.250.2512.53.2124.68+324.68+524.68+724.68+924.685795.57955.7957579.51990198.9-1989198.82.250.16+2640.0225+5.22.25+0.22520 - 4.820.59+0.415.90.1250.2532164.50.251.2522.40.9+0.99+0.999+0.9999+0.9999998989898999999991010101111111114.87.5 30.051.7+1.7+3.042.9+5.86.96 5.53.146.5+4.512403.8+12451+1.241400+7609.6+0.767001 1-2+3-4+5-6+-98+99-100+100