1、1简便运算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 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.
2、81.3）1.52.23.92.73.97.3 181.80.1250.8 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 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+3.242.35+1.713+0.287+7.65 1.57+0.245+7.
3、43 6.02+3.6+1.9820.134+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 82.451.53.251.790.591.75 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 0.250.7357.60.80.27.6 0.85199 0.258.541.288.60.728.6 12.50.960.8 10.49.60.50.8（4.31.25） 3.123.1299
4、 28.610128.30.8615.70.8614.7 2.4102 2.311.20.5147.322.68 2.648.677.3611.33 7028 （2.50.25）0.4 9.161.50.59.16 3.63.60.563.42.50.4 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递等式6-1.64= 5.38+7.85-5.37= 7.20.8-1.25= 36-1.193-0.43= 6.5（4.8-1.24）= 0.681.9+0.321.
5、9 10.15-10.750.4-5.7 5.8（3.87-0.13）+4.23.74 32.52-（6+9.7283.2）2.5 （7.1-5.6）0.9-1.15 2.5 5.42.6（3.7-2.9）+0.62 126（12-7.2）-6 1267.2-6 33.02（148.490.85）2.5218（2+2.5）-1.80.38 + 9.62 3.75.4= 8.74 - 8.74 2.3 + 7000.03= 4.38 (36.94 + 34.30.2)=(5.84 - 3.9 ) 0.4 + 0.15 0.92=1.5 8 + 3.6 920 - 2.548 + 3.251.8(
6、1.4 - 0.26 2)7.6 - 5 (0.3 + 0.9)108.4 8.41.518(1 0.99)(38.6 8.6)(0.25 + 2.5 + 25)0.48.4 + 7.66 + 2.34 +1.60.05 (83+117)(9.65.6)4.5(3.25-1.25)0.7535.6-51.736.75+2.521.2 0.450.250.20.89.80.29.80.23.996(15.415.4)0.36(8.421.42)0.50.41.42-0.3660.6 49.50.2-2.0723 6.7+3.34.4+5.61-0.09(0.12+0.88) 8.5+1.52+1
7、0.4 10-(0.2+6.370.7)0.05 (6.1-4.6)0.8-10.360.12536(40.5)36 15.6-(4.1+0.2+6.860.7) 5-(1-1.20.8)42.51.2548 (12.5+12.5+12.5+12.5)0.8 10.76.8-6.80.7 7.86-3.12-2.88+5.14 90.8-(7.03+2.17)0.45 41.30.398+0.131.1110.25+0.40.6 13.63-40.62 25.8+10.5(5-3.5)(5.5+6.80.65)2.58.12 6.80.1212.8 （3.21.5+2.5）1.6 5.38+7
8、.85-5.3717.20.8-1.2 0.681.9+0.321.9 10.15-10.750.4-5.7 12.8（3.27-0.53）+4.213.76.1+9.7283.22.5 （7.1-5.6）0.9+1.155.6（3.7-2.9）+0.83 5.5+(12.8-6.80.55)8.5 0.12 4.80.12（3.21.5+2.5）1.6 5.38+7.85-5.37 7.20.8-1.25.26.5（14.8-1.24.3） 5.8（3.87-0.13）+4.23.74 32.52-（6.6+9.7283.2）2.5 （7.1-5.6）0.9-1.15 2.5 5.42.6（
9、3.7-2.9）+0.62 (6.8-6.80.55)8.50.12 4.8-5.263.2（3.21.5+2.5）1.6 0.681.9+0.321.9方程(0.5+x)+x=9.822(X+X+0.5)=9.825000+x=6x3200=450+5X+XX-0.8X=612x-8x=4.87.5*2X=151.2x=81.6x+5.6=9.4x-0.7x=3.691x1.3X+8.3=10.715x33x8167(x-2)=2x+33x+9=2718(x-2)=27012x=300-4x57x+5.3=7.43x5=4.830x+25=851.48-2x=66x-12.83=0.0641
10、0-3x=1703(x+0.5)=210.5x+8=436x-3x=181.5x+18=3x53-x2=80.273x=0.351.8x=0.972x0.756=909x-40=5x5+9=2148-27+5x=3110.5+x+21=56x+2x+18=78(200-x)5=30(x-140)70=40.1(x+6)=3.30.44(x-5.6)=1.67(6.5+x)=87.5(27.5-3.5)x=4x+19.8=25.85.6x=33.69.8-x=3.875.6x=12.65x+12.5=32.35(x+8)=102x+3x+10=703(x+3)=50-x+35x+15=603.5
11、-5x=20.37+4x=12.5x1.5-1.25=0.754x-1.36=2.620-9x=1.26.256x+12.8=15.81502+3x=6902x-20=43x+6=182(2.8+x)=10.4(x-3)2=7.513.2x+9x=33.33x=x+100x+4.8=7.266x+18=483(x+2.1)=10.512x-9x=8.713(x+5)=1692x-97=34.23.4x-48=26.842x+25x=1341.5(x+1.6)=3.62(x-3)=5.865x+7=429x+42.5914.2x+2.5x13410.5x+6.5x=5189x-43x=9.25x
12、-45=1001.2x-0.5x=6.323.4=2x=564x-x=48.64.5x-x=28X-5.7=2.15155X-2X=183X+0.7=53.52=4.2+x261.5=2x+100.516160.2=4x139.25X=0.40316.9X=0.323x=14x14x14x=6535x801.8+6x546.7x60.36.794x402x+8=1623x-14x=14x+7x=89x-3x=66x-8=45x+x=9x-8=6x4/5x=202x-6=127x+7=146x-6=05x+6=112x-8=101/2x-8=4x-5/6=773x+7=283x-7=269x-x
13、=1624x+x=506/7x-8=43x-8=306x+6=123x-3=15x-3x=42x+16=195x+8=1914-6x=815+6x=275-8x=47x+8=159-2x=14+5x=910-x=88x+9=179+6x=14x+9x=4+72x+9=178-4x=66x-7=127x-9=8x-56=18-7x=1x-30=126x-21=216x-3=69x=184x-18=135x+9=116-2x=11x+4+8=237x-12=8X-5.7=2.15155X-2X=183X0.7=53.52=4.2x261.5=2x0.516160.2=4x9.25X=0.40316
14、.9X=0.3X0.5=2.635x801.8-6x546.7x60.36.7894x400.2x0.40.53.79.4x0.4x16.2124x201/3x5/6x1.412x34x=118x14x=1223x514=141234x=562214x=12(0.5+x)+x=9.82 2(X+X+0.5)=9.8 25000+x=6x 3200=450+5X+X X-0.8X=6 12x-8x=4.8 7.5*2X=15 1.2x=81.6 x+5.6=9.4 x-0.7x=3.6 91x 1.3 X+8.3=10.7 15x 3 3x816 7(x-2)=2x+3 3x+9=2718(x-
15、2)=270 12x=300-4x 7x+5.3=7.4 3x5=4.8 30x+25=85 1.48-2x=6 6x-12.83=0.06 410-3x=170 3(x+0.5)=21 0.5x+8=43 6x-3x=18 1.5x+18=3x 53-x2=8 0.273x=0.35 1.8x=0.972 x0.756=90 9x-40=5 x5+9=21 48-27+5x=31 10.5+x+21=56 x+2x+18=78 (200-x)5=30 9(x-140)70=4 0.1(x+6)=3.30.4 4(x-5.6)=1.6 7(6.5+x)=87.5 (27.5-3.5)x=4 4x=4402.1x=16.8 18(x-2)=270 18(x-2)=270 12x=300-4x 7x+5.3=7.4 0.1(x+6)=3.30.4 4(x-5.6)=1.6 7(6.5+x)=87.5 (27.5-3.5)x=4 10
