1、简便计算10.1 0.78 3.80.99 20.99.920.90.1 2.963.53.50.96 2.51.250.32 6.50.99+0.065 （12.5+1.25）80 3.88.9+2.13.83.8 7.94.5+790.55 37.83.4+3780.56+37.8 132.678.224132.60.555550.9+0.111110.5 4.89.9 3.51.01 3.59.8 0.2544.78 0.65201 4.80.25 2.330.54 1.5105 1.22.5+0.82.5 1020.45 0.51.252811 3.22.5 简便计算1042.5 1.
2、25（4-0.8） 100.199+100.1 48510.2-48.5 2.6999 2.53212.5 3.6102 3.723.56.283.5 15.613.115.615.62.1 4.87.8780.52 4.8100.156.59.956.57.0910.80.87.09 18.769.918.76 3.834.563.835.44 4.3612.58 9.7999.7 27.53.77.53.7 8.91.01 7.74（2.81.3）1.52.26 3.92.73.97.3 1.252.532 12.79.91.27 3.654.736.50.37 简便计算0.250.734
3、 7.60.80.27.6 0.85199 0.258.54 1.288.60.728.6 12.50.960.8 10.49.60.35 0.8（4.31.25） 3.123.1299 28.610128.6 0.8615.70.8614.7 2.4102 34.60.6+65.40.63.510252.512.5640.258.43.712.5+4.312.5（85.27）1.257.6910.10.2539+0.254.51.84.23.59300.6563.42.50.4简便计算4.91.4 3.9（1.35） （7.71.54）0.7 2.52.4 2.745 0.351.2520.8 32.40.90.132.4 150.257028 15（0.150.4） 4.252.59.90.17
