1、小数乘法简便计算【练习】1小数乘法简便计算(一)0.258.54 12.50.960.8 0.250.734 4.3612.580.2516.24 1.252.532 3.20.2512.5 0.2536(1.250.125)8 4.810.1 3.6102 0.39199 0.32403 3.6510.1 0.859.9 3.723.56.283.5 15.62.115.61.1 4.87.8780.52 56.59956.5 小数乘法简便计算【练习】2小数乘法简便计算(二)7.0910.80.87.09 1.879.90.187 4.2994.2 3.834.563.835.44 9.79
2、99.7 27.53.77.53.73.140.6831.40.032 7.20.22.41.4 5.411-5.4 7.74(2.81.3) 1.52.26 3.92.73.97.3 12.79.91.272.316+2.323+2.3 3.654.7 36.50.37 1010.87-0.9187小数乘法简便计算【练习】3小数乘法简便计算(三)46572386 10.716.1-15.110.7 7.60.80.27.61.288.60.728.6 10.60.359.60.35 8.91.01 0.65101 480.56440.48 0.2793430.657279 0.2645192
3、640.481 9.161.530.05391.6 0.12596 12.510.8 (204)0.254521502.1 451.585.515.8 257.30.4小数乘法简便计算【练习】4小数乘法简便计算(四)5310.1 4.26.513.494.2 257.30.4 2.73.7+0.37730.12596 12.510.8 (204 )0.25 3.6510.1 4521502.1 451.585.515.8 9.992.223.333.34 3.71.40.05 720.81+10.4 1.425+3.45 1.5102 1.250.70.8 7.60.80.27.6 0.859
4、.9 1.288.60.728.6 12.50.960.8 10.60.359.60.35小数乘法简便计算【练习】5小数乘法简便计算(五)8.799 0.8(12.5 1.25) 1.250.4802.5 1.252.53251.030.2 321.25 0.4599 15.62.115.61.1 0.2516.24 (1.250.125)8 4.810.1 3.61023.723.56.283.5 1.879.90.187 4.2994.2 4.87.8780.52 56.59956.5 7.0910.80.87.093.834.563.835.44 4.3612.58 9.7999.7 小数乘法简便计算【练习】6小数乘法简便计算(六)27.53.77.53.7 3.20.2512.5 0.2536 0.250.734 3.140.6831.40.032 7.20.22.41.4 8.91.01 0.651017.74(2.81.3)1.52.26 3.92.73.97.3 12.79.91.275.411-5.4 2.316+2.323+2.3 3.654.736.50.37 46572386 2.229.9+6.666.7 1010.87-0.9187 10.716.1-15.110.7 0.39199 0.32403 0.258.54小数乘法简便计算【练习】7