1、五年級小數簡便運算練習(一)1、 口算 245 10023.56 1.50.4 0.850 32258125 10.48 2.651 0.2500 2.54 1216816二、運用運算定律填空。 4.8+8.63+5.2+0.37 5.93+0.19+2.81 1.76+0.195+3.24 2.35+1.713+0.287+7.65 1.57+0.245+7.43 6.02+3.6+1.98 0.134+2.66+0.866 1.27+3.9+0.73+16.1 7.54.96.5 3.070.381.62 1.293.72.716.3 82.451.55 3.251.790.591.75

2、23.40.813.47.2 0.32403 3.20.364.81.64 1.233.40.236.6 0.2536 12.7（3.70.84） 36.541.764.54 0.250.7347.60.80.27.6 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（4.236.17）0.8 0.8615.70.8614.7 2.4102 147.322.68 2.648.677.3611.33 2.311.20.5 4.025.40.98 5.171.83.

3、2 13.75(3.756.48) 3.687.562.68 7.852.340.854.66 35.61.815.67.2 3.822.90.189.1 9.64.83.6 7.140.532.47 5.272.860.661.63 13.354.682.65 47.87.45+8.8 0.398+0.36+3.64 15.75+3.590.59+14.25 42.5(6.071.13) 73.81.6413.85.36 66.868.661.34 0.2516.24 3.723.56.283.5 36.83.96.1 2 5.48(9.40.52)4.87.8780.52 3.6102 6

4、.40.253.64 324.90.9 4.84.80.5 (1.250.125)8 4.8100.1 56.59.956.5 7.0910.80.87.09 4.23.5 3201.258 18.769.918.76 3.522.50.4 4.780.23.44 3.94.16.15.90.491.4 1.252.532 3.60.62 3.6510.1 3.63.60.8 15.20.254 5.63.5 9.60.80.4 4.2994.2 0.89100.1 146.5(2346.5) 17.8(1.784) 5.8324.27 (45.932.7)80.125 9.7999.7 4.

5、3612.58 15.613.115.615.62.1 0.65101 27.53.77.53.7 8.542.50.4 3.834.563.835.44（2.50.25）0.4 9.161.50.59.16 3.63.60.54.51.8 4.23.5 9300.65 63.42.50.4 4.91.4 3.9（1.35） （7.71.54）0.7 2.52.4 2.745 0.351.2520.8 32.40.90.132.4 150.25 7028 15（0.150.4） 4.252.59.90.17 0.12564 0.68101 3.265.73.260.7 55.69955.6 1.252130.8 19.625(4.3799.62