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1、一、能用简便的要简便计算12.340.25 12.96（9.6 1.52）8510.1 1.2 0.251.3 4 1030.25 （4.86.4）8 35125 40.50.811.05 34.50.03+34.5 0.97（203.472.2）（1.3 0.2）84.3 12.5 97.50.39136.7 2.5102 86.40.240.25 4.228 11.16（100.7）(9.6+3.2)0.8 （30094.8）0.5 0.12516 12.63.5（9.88.7）3.25.6 11.4 0.648（0.40.5）0.6 5.74995.74 891.14.7 4.753.2
2、52.47.6 2.7 5.4 3.9 3.81.4 18.2 0.7 3.6 9.85-5.46 4.80.25 8.053.4+7.6 4.710.2 6.584.50.9 7.63997.63 2.8 0.5+1.58 6.732.561.443.27 85.2+3.8 3.8+3.8 2.372.5 4 (6.7+6.7+6.7+6.7)2.5 1.5102 9.8 254 2400160.5 320.25 0.125 2.83.2 3.2 7.2 7.4 0.152.8 3.760.250.49 0.008+0.92 51.28 0.254.784 7.8（1.3 4）0.65201
3、 7.2 0.9 0.017.2 1.22.5 0.8 2.5 8.6 10.1 2.57.1 4 5.6(12.5 8.5 0.85)16.129916.12 (8.1 5.6)0.91 0.4 5.20.9 0.9 8.254.08+0.75 4.08+4.08 4.3500.2 4.325.436.68 642.640.5 15.176.8 3.2 2615.715.7 24 12.75(2.75 6.8)(2.275 0.625)0.28 1.273.90.7316.1 3.94+34.3 0.2 12.84.95.1 1.2(9.6 2.4)4.8 6.75（0.93.75）8.91
4、.1 4.7 1.341.83.660.2 2.75.4 3.9 0.960.280.040.72 3.69.85-5.46 12.78-(4.97+2.78)8.053.4+7.6 31.70.50.7 1.65 6.584.5 0.9 35.72-4.9-（5.72+5.1）2.80.5+1.58 1113.672.8 3.677.2 324.90.9 12.56.3+271.25+0.125 0.01 4.84.8 0.5 3.1+25.78+6.9 (1.25 0.125)8 15.25+4.72+4.75+5.28 4.8100.1 34.82(4.82+15.2)56.59956.
5、5 7.28+0.94+2.72+0.06 7.0910.80.87.09 7.84+0.73 0.84 4.85+0.35 1.4 6.3 99+6.3 8.7 17.4-8.7 7.4 15.74.35.7 12.50.4 2.5 8 1.6+0.4 1.6+0.4 0.873.16+4.64 62.82.50.4 9.5101 7.3 99 0.68（5.2-3.5）1.25 (1.25+2.5)8 40.5 0.81 0.18 9.421094.20.9 4.8（15 2.4）1.8 2.48+1.52 1.8-0.5 213.0.8257 8.76+0.4 3.62.5+1.24 6
6、.81+6.81 99 6.5(10-3.7)+2.98 0.2518540 4.75+8.4(9.2-6.8)40 4.40.8 3.4 0.8 19.8-0.6 0.6-0.64(9.37+9 37+937+937)25 0.1257.9 16 42.1.1.1.75 2.48(7.3-5.8)+1.57.52 2.376.3+2.37 3.7 12.773-4.5(0.75-0.356)+9.232.51.250.32 (6.4+0.88)0.8+3.2 1.25 3.810.1 24-5.4+(0.63+1.29 0.23)2.5(3.8 0.04)2.18+4.65+7.82+5.3
7、5+12.5 7.69101 15.84-2.17-3.83 3.810.1(25+2.5+0.25)4 0.2539+0.25 (35.2 45.6+45.6 63.8+45.6 0.12572 12.253.1 0.856.17 460.33+540.33（1.9 1.9 0.9）（3.8 2.8）二、用竖式计算1.8+0.02=5.76 32.08 7.5=0.43 0.28=0.72 0.9=90.75 3.3 1.05 2.4=4.6 0.6=0.2 0.01=16.9 0.13 1.89 0.54=3.08 0.43=0.25 40=3.7 0.016 5.61 6.1=5.22
8、29=1.25 0.8=5.2 0.6 6.21 0.3=13.95 3.1=5.5 66=6.4 0.5 1.3 0.9 5.93 0.76 7.8 0.35=5.25 5 21.84 0.7 32.08 8.4 0.25=0.042 0.54 28.14 6.7 3.54 13 4.1-1.298 0.25 0.046 0.396 1.2=205.674 6.84 7.45 1.08 25 15.6 13=5.4 0.036 36.72 2.4 0.125 1.4 0.025 14=5.778 5.4=110.7 0.54 10.1 3.3=0.04 0.12 1.5 0.25=1.204
9、 0.43=3.25 9.04=61.2=9.2 2.3=3.5 0.2=7.15 22 18.9 0.54=6.45 0.73=4.8+2=1.55 3.9 0.35 8.6=1.5 26.7=3.5 24=8.4 1.3 540.36=7.218 36 4.25 24=35.4 4.2 0.462 1.4 5.24 7.2 5.24 7.2 2.52 3.4 0.756 0.36=5.84 0.16 87.11 3.1 2.5 0.7=3.06 36=8.02 3.5=1-0.01=3.68 0.25 1.44 1.8=8.9 0.05=7.6 1.05=4.48 0.4 5.86 0.2
10、4 16.32 51 5.56 0.83 4.8 0.25 0.18 15=811 6.5-5.6=13.76 0.8=9.58 0.23=18.72 3.6=2.84 0.05=10.75 12.5=3.84 2.6 28.56 5.1=0.42 0.308 0.76 0.32 4.32 3.6 2.7+3.13 三、速算与巧算(1)5.8+2.32+0.68+4.2(2)1999+199.9+19.99+1.999(3)12.59-3.24-5.76(4)8.1+7.8+8.2+8.4+7.9+7.7(5)185.5(6)8.881.25(7)34.70.25(8)2381.25(9)0.
11、2512.53.2(10)124.68+324.68+524.68+724.68+924.68(11)5795.5795 5.7957579.5(12)1990198.9-1989198.8(13)2.250.16+2640.0225+5.22.25+0.22520(14)(1+0.28+0.84)(0.28+0.84+0.66)-(1+0.28+0.84+0.66)(0.28+0.84)(15)4.820.59+0.411.59-0.3235.9(16)0.1250.2532(17)164.5(18)0.251.2522.4(19)0.9+0.99+0.999+0.9999+0.99999(
12、20)(72357+35728)(5174)(21)9898989899999999101010111111111(22)4.8(11.03-15.67.5)(23)(67.8+9.48)0.96-2.5830.05(24)1.7+1.7(5.8-2.8)+(1.751.4)(25)3.048.7-3.042.9+5.86.96(26)(0.1+0.2+0.3+0.4+1)5.5(27)3.146.5+4.53.14-3.14(28)12403.8+12451+1.241400+7609.6+0.76700(29)1(23)(34)(45)(19992000)(30)1-2+3-4+5-6+-98+99-100+100