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1、五年级数学计算练习(2)简便计算。(1)7.30.64+0.36 7.3 490.1268 1.010.990.857.5+8.50.25 0.053.240(2)2.73.7+0.3773 1.5102 1.250.70.87.0910.80.87.09 56.599+56.5 (3.5+3.5+3.5+3.5)2.5(3)1.61.25 17.52.37.52.3 2.68.13+2.611.874.872.34+48.70.266 0.9932(4)5.680.1258 1.680.25 1.7699+1.76257.50.42 0.85.61.25 590.28+6.25.9+5.9(
2、5)0.9959 4.20.25 (0.512.5)(20.8)7.40.254 5.88.5+5.80.5+5.8 2.53.384(6)2.53.384 17.51.258 0.3520123.748.68.613.74 52.342.54(7)2.10.50.6 7.5367.5 7.546.7+52.37.5+7.54.50.80.125 480.2512.5 2.0161999+2.016(8)3.298 8.42.77+0.238.4 7.91.2584.32.54 4.50.80.125(9)6.250.23+17.70.625 25100.4 7.230.125872.31.258.8 2.5(8+0.4) (10)0.252.940 12.95+3.86+6.14 4.253.7+7.34.254.251.182.58+7.421.18 1.253.22.5(11) (3.7+3.7+3.7+3.7)2.5 0.125408 2.362.544.871.258 3.79.9(12)8.567.5+85.60.25 70.4(70.40.25) 10.242.549.92.54 96.513.1+3.14.493.1