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1、1 6.70.3 2.46.2 0.560.04 3.74.6 0.290.07 6.5 8.4 3.22.5 2.61.08 0.867 3.516 12.542 1.823 0.370.4 1.0625 70.86 0.6 0.39 270.43 0.04945 0.80.9 1.70.45 25.26 34.515 7.839 4.088 0.546 6.3 14 7215 14.217 1.812 22.44 2415 1.2618 43.529 18.927 1.3515 28.611 20.424 3.6452 15.612 32816 5.046 76.545 0.8428 7.
2、650.85 12.60.28 2 62.42.6 0.5440.16 1.441.8 11.72.6 19.412 5.980.23 19.765.2 10.84.5 211.4 8.841.7 6.210.03 180.24 182.4 1.80.24 13.530 13.50.3 13.50.03 2818 78.611 40075 1516 1.57 5.79 58 6.643.3 9.4 6 38.22.7 12.411 3.72.2 220.53 2.5 0.4 251.5 1.890.54 7.12.5 0.510.22 32.52.5 1.360.05 0.061.7 2.08
3、75 492.6 2.3 0.46 1.93+2.7 2.731.5 28.515 8.3-2.63 3 脱式计算 720.81+10.4 7.062.4-5.7 50.41.9-1.8 3.760.25+25.8 0.75180.15 2.070.230.45 21.360.8-12.9 7.28+3.22.5 1.080.8 0.27 2.050.82+33.6 44.280.9 4.1 9.07-22.783.4 5.5 17.3+6.7 5.5 3.8+4.29+2.1+4.2 解方程 x+3.2=4.6 x-1.8=4 x-2=15 1.6x=6.4 x7=0.3 x3=2.1 x+
4、0.64=14.14 x+0.3=1.8 5x=1.5 2x-20=4 3+x=5.4 x-1.5=4 x-6=7.6 x1.1=3 x5=15 0.2x=6 3x+6=18 2x-7.5=8.5 16+8x=40 4x-39=29 2x+2.8 2=10.4 x+2.4x=5.1 2（x-2.6 ）=8 5（x+1.5）=17.5 x+4.8=7.2 4 8（x-6.2 ）=41.6 （x-3 ）2=7.5 13.2x+9x=33.3 8x-3x=105 x-6.5=3.2 X8=0.4 6x+18=48 3（x+2.1 ）=10.5 12x-9x=8.7 x-0.36=16 5.4x+x=12.8 3.8+x=6.3 x-7.9=2.6 2.5x=14 x3=1.2 3.4x-48=26.8 2x-97=34.2 42x+25x=134 13（x+5）=169 2（x-3 ）=5.8 5x+7=42 x4.2=2 3.6x-x=3.25 简算 0.2544.78 0.65201 4.80.25 2.330.5 4 1.5 105 1.22.5+0.8 2.5 0.0340.6 1020.45 0.5 1.252811 3.22.5 1042.5 1.25（4-0.8 ） 5
