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1、用简便方法计算2586.24586.20.436152361.50.2451024510.23427+3473342.7+347.38699+868.699+8.6125881.258.86.94.83.1 0.4566.223.78 15.89(6.755.89) 4.025.40.98 5.171.83.2 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 73.81.6413.85
2、.36 47.87.45+8.8 0.398+0.36+3.64 15.75+3.590.59+14.25 66.868.661.34 0.2516.24 (1.250.125)8 3.6102 3.723.56.283.5 36.83.96.1 15.613.115.615.62.1 4.87.8780.52 324.90.9 4.8100.1 56.59.956.5 7.0910.80.87.0925.48(9.40.52) 4.23.5 3201.258 18.769.918.76 3.522.50.4 3.94.16.15.9 5.63.5 9.60.80.4 4.2994.2 17.
3、8(1.784) 0.491.4 1.252.532 3.6510.1 15.20.254 0.89100.1 146.5(2346.5) 3.834.563.835.44 4.3612.58 9.7999.7 27.53.77.53.7 8.542.50.4 0.65101 3.20.2512.5 (45.932.7)80.125 3.140.6831.40.032 5.61.250.82.50.47.20.22.41.4 8.91.01 7.74(2.81.3)1.52.26 3.92.73.97.3 181.80.1250.8 12.79.91.27 21(9.33.7)5.6 15.0
4、2-6.8-1.02 5.411-5.4 2.316+2.323+2.3 9.43-(6.28-1.57) 3.654.736.50.37 46572386 13.70.253.74 2.229.9+6.666.7 1010.87-0.9187 10.716.1-15.110.7 0.79199 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 3.07
5、0.381.62 1.293.72.716.3 82.451.55 3.251.790.591.75 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 0.250.734 7.60.80.27.6 0.85199 0.258.54 1.288.60.728.6 12.50.960.8 10.49.60.350.8(4.31.25) 3.123.1299 28.610128.6 0.8615.70.8614.7 2.4102 2.311.20.5 147.322.68 2
6、.648.677.3611.33 7028 (2.50.25)0.4 9.161.50.59.16 3.63.60.5 63.42.50.4 4.91.4 3.9(1.35) (7.71.54)0.7 2.52.4 2.745 15(0.150.4) 0.351.2520.8 32.40.90.132.4 150.25 4.51.8 4.23.5 9300.653.29+0.73+2.27 3.29-0.73-2.27 7.5+2.5-7.5+2.57.325-3.29-3.325 7.325-(5.325+1.7) 7.325-(5.325-1.7) 3.29+0.73-2.29+2.27
7、3.290.254 0.1258.8 0.250.28 0.1253.22.5 3540.2 0.2540.254 3.59.9 3.599+3.5 3.5101-3.5 3.59.9+3.50.1 3.52.7+350.733.52.7-3.50.7 (32+5.6)0.8 3.50.6-0.50.64.93.5 70.254 70.125 7.35(7.350.25) 7.35(7.350.25) 3.070.381.62 1.293.72.716.3 82.451.553.251.790.591.75 23.40.813.47.2 0.324033.20.364.81.64 1.233.
8、40.236.6 0.253612.7(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 10.49.60.350.8(4.31.25) 3.123.1299 28.610128.6(4.236.17)0.8 0.8615.70.8614.7 2.4102147.322.68 2.648.677.3611.33 2.311.20.5(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
9、 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) 4.252.59.90.173.29+0.73+2.27 3.29-0.73-2.27 7.5+2.5-7.5+2.57.325-3.29-3.325 7.325-(5.325+1.7) 7.325-(5.325-1.7)3.29+0.73-2.29+2.27 3.290.254 0.1258.8 0.250.28 0.1253.22.5 3540.2 0.2540.254 3.59.9 3.599+3.5
10、 3.5101-3.5 3.59.9+3.50.1 3.52.7+350.733.52.7-3.50.7 (32+5.6)0.8 3.50.6-0.50.64.93.5 70.254 70.125 7.35(7.350.25) 7.35(7.350.25) 3.070.381.62 1.293.72.716.3 82.451.553.251.790.591.75 23.40.813.47.2 0.324033.20.364.81.64 1.233.40.236.6 0.253612.7(3.70.84) 36.541.764.54 0.250.7347.60.80.27.6 0.85199 0
11、.258.54 1.288.60.728.6 12.50.960.8 10.49.60.350.8(4.31.25) 3.123.1299 28.610128.6(4.236.17)0.8 0.8615.70.8614.7 2.4102147.322.68 2.648.677.3611.33 2.311.20.5(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 15
12、0.257028 15(0.150.4) 4.252.59.90.17138435738 498397 502399 63455513712556 30299302 1458914521 二、用简便方法计算。1、36826491351 2、 891011113、24127476573 4、4002731275、327(96127) 6、72987、442103142 8、9999999、6752 10、25(784)11、72125 12、9000125813、40025 14、253615、10327 16、7610217、3600254 18、993519、(2512)4 20、56272
13、74421、569956 22、125258423、2532125 24、12564 (1)(7861)39 (2)7008218 (3)348163242410537(4)125474725 (5)201316 (6)37420522695 (7)3000999 (8)997721 (9)8747087053(10)(555555555)125(11)125(840)25 (12)994999(13)264974264 (14)454999999545(15)9999366666332(16)124386512476110767(17)624445518(18)340062343820381
14、4(19)199219911991-19911990199038425 125278 4835235458+251+749 196-26-74 8400254536-249-136 813+569-213 48+5234632+4668 9499+94 101482-4821629+1648+1623 6753-674315(9+10+8) (6+8)25第三单元 简便计算姓名: 学号: 班级:小测题二(简便运算二拆数凑整)56125 4825 992810159 10243 14424 320- 198小测题三(加减法或乘除法运算的简便运算)136-48-36 417-138-62 246-178+78437-(137+59) 252-(63-48) 357+(132-57)30001258 1080(93) 1000(204)24(368) 239+153+47-239