1、3.56.283.5 36.83.96.115.613.115.615.62.1 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 3.94.16.15.95.63.5 9.60.80.4 4.2994.2 17.8(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
2、 27.53.77.53.7 8.540.4 0.65101 3.20.2512.5 (45.932.7)80.125 3.140.6831.40.032 5.67.20.22.41.4 8.91.01 7.74(2.81.3)1.52.263.92.73.97.3 181.80.1250.8 12.79.91.27 21(9.33.7)5.6 15.02-6.8-1.02 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
3、 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+1.980.134+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 82.451.553.251.790.591.75 23.40.813.47.2 0.324033.20.364.81.64 1.233.40.236.6 0.253612.7(3.70.84) 3
4、6.541.764.54 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 28.610128.60.8615.70.8614.7 2.4102 2.311.20.5147.322.68 2.648.677.3611.33 7028 (2.50.25)0.4 9.161.50.59.16 3.63.663.40.4 4.91.4 3.9(1.35) (7.71.54)0.7 2.52.4 2.745 15(0.150.4)0.3520.8 32
5、.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 3.29 0.1250.283.22.5 3540.24 3.59.9 3.599+3.5 3.5101-3.59.9+3.50.12.7+350.732.7-3.50.7 (32+5.6)0.8 3.50.6-0.50.64.93.5 770.1257.35(7.350.25)
6、7.35(7.353.070.381.62 1.293.72.716.3 82.451.553.251.790.591.75 23.40.813.47.2 0.323.20.364.81.64 1.233.40.236.6 0.2512.7(3.70.84) 36.541.764.547.6 0.851998.6 12.5 10.49.61.25) 3.123.1299 28.6(4.236.17) 0.8614.7 2.4147.322.68 2.648.677.3611.33 2.310.4 9.169.16 3.63.61.8 4.2 9305 4.91.4 3.95) 2.52.4 2
7、.745 32.432.4 150.2570280.4) 4.259.90.17 3.29-0.73-2.27 7.5+2.5-7.5+2.5 7.325-(5.325-1.7) 3.29 (32+5.6) 723.40.813.47.2102 930 3.9 2.7 32.4 15138435738 498397 502399 63455513756 30299302 1458914521 二、用简便方法计算。1、36826491351 2、 891011113、24127476573 4、4002731275、327(96127) 6、72987、442103142 8、9999999、6
8、72 10、25(784)11、72125 12、900012513、40025 14、2515、10327 16、7617、3600254 18、993519、(2512)4 20、5627274421、569956 22、125823、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)264
9、974264 (14)454999999545(15)9999366666332(16)124386512476110767(17)624445518(18)3400623438203814(19)199219911991-19911990199038425 125278 4835458+251+749 196-26-74 8400536-249-136 813+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)30008 1080(93) 1000(2024(368) 239+153+47-239
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