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1、.简便运算12.340.258510.11030.253512534.50.03+34.5 0.9712.96-(9.6-1.52)1.2 0.25+1.3 4(4.8+6.4) 840.5 0.81 1.05(203.4+72.2) (1.3 0.2)2400160.52.8 3.2+3.2 7.23.76 0.25-0.490.25 4.78 40.65 201320.25 0.1257.4-0.15 2.80.008+0.92 5-1.287.8(1.34)7.2 0.9+0.01 7.284.3 12.5 97.5 0.39-136.72.51024.2 28(9.6+3.2)0.80
2、.125 1686.4 0.24 0.2511.16 (10-0.7)(300-94.8) 0.512.6 3.5-(9.8-8.7)3.2 5.6-11.45.74 99+5.744.75+3.25 2.4+7.63.8 1.4+18.2 0.74.8 0.250.648 (0.4+0.5) 0.68.9 1.1 4.7 2.7 5.4 3.9 3.6 9.85-5.46 8.05 3.4+7.64.7 10.27.63 99+7.636.73+2.56+1.44+3.273.29+0.73+2.273.29-0.73-2.277.5+2.5-7.5+2.5.7.325-3.29-3.325
3、7.325-(5.325+1.7)7.325-(5.325-1.7)3.29+0.73-2.29+2.273.29 0.25 40.125 8.80.25 0.280.125 3.2 2.53540.20.25 40.25 43.5 9.93.5 99+3.53.5 101-3.53.5 9.9+3.5 0.13.5 2.7+35 0.733.5 2.7-3.50.7(32+5.6) 0.83.5 0.6-0.50.64.9 3.570.25 47 0.1257.35 (7.35 0.25)7.35 (7.35 0.25).3.07 0.38 1.621.29 3.7 2.71 6.38 2.
4、45 1.553.25 1.79 0.59 1.7523.4 0.8 13.4 7.20.32 4033.2 0.36 4.8 1.641.23 3.4 0.23 6.60.25 3612.7 （ 3.7 0.84 ）36.54 1.76 4.540.25 0.73 47.6 0.8 0.2 7.60.85 1990.25 8.5 41.28 8.6 0.72 8.612.5 0.96 0.810.4 9.6 0.350.8 （ 4.3 1.25 ）3.12 3.12 9928.6 101 28.6（4.23 6.17 ）0.80.86 15.7 0.86 14.72.4 102.14 7.3
5、2 2.682.64 8.67 7.36 11.332.31 1.2 0.5（2.5 0.25 ）0.49.16 1.5 0.5 9.163.6 3.6 0.54.5 1.84.2 3.59300.6 563.4 2.5 0.44.9 1.43.9 （1.3 5）（7.7 1.54 ）0.72.5 2.42.7 450.35 1.25 20.832.4 0.9 0.1 32.4150.25702815（0.15 0.4）4.25 2.5 9.9 0.173.29+0.73+2.273.29-0.73-2.277.5+2.5-7.5+2.57.325-3.29-3.3257.325-(5.325
6、+1.7)7.325-(5.325-1.7).3.29+0.73-2.29+2.273.29 0.25 40.125 8.80.25 0.280.125 3.2 2.53540.20.25 40.25 43.5 9.93.5 99+3.53.5 101-3.53.5 9.9+3.5 0.13.5 2.7+35 0.733.5 2.7-3.50.7(32+5.6) 0.83.5 0.6-0.50.64.9 3.570.25 470.1257.35 (7.35 0.25)7.35 (7.35 0.25)3.07 0.38 1.621.29 3.7 2.71 6.38 2.45 1.55.3.25
7、1.79 0.59 1.7523.4 0.8 13.4 7.20.32 4033.2 0.36 4.8 1.641.23 3.4 0.23 6.60.25 3612.7 （ 3.7 0.84 ）36.54 1.76 4.540.25 0.73 47.6 0.8 0.2 7.60.85 1990.25 8.5 41.28 8.6 0.72 8.612.5 0.96 0.810.4 9.6 0.350.8 （ 4.3 1.25 ）3.12 3.12 9928.6 101 28.6（4.23 6.17 ）0.80.86 15.7 0.86 14.72.4 10214 7.32 2.682.64 8.67 7.36 11.332.31 1.2 0.5.（2.5 0.25 ）0.49.16 1.5 0.5 9.163.6 3.6 0.54.5 1.84.2 3.59300.6 563.4 2.5 0.44.9 1.43.9 （1.3 5）（ 7.7 1.54 ） 0.72.5 2.42.7 450.35 1.25 20.832.4 0.9 0.1 32.4150.25702815（ 0.15 0.4 ）4.25 2.5 9.9 0.17.