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1、 练习一一、直接写出得数。每空0.5分。15分)0.150.5= 2.4 0.08= 2.5x4= 6.37= 0.750.25= 0.3x0.4= 7.20.8= 5.155= 5.6100= 0.1258= 4.7+2.3= 4.52= 6.92.5= 7.20.8= 63.4= 0.620.32= 1.40.5= 0.75100= 0.020.5= 3.60.3= 1007.8 0.90.7 0.258= 4.80.3= 4.950.9= 0.962= 0.5628= 0.360.4= 0.640.8= 0.723.6= 二.计算能简便计算的要简便计算(39=27) 73.81.645.
2、36 0.752. 50.4 3.748.31.73.7 0.2516.24 3.723.56.283.5 36.83.96.1 2 5.48(9.40.52) 4.87.8780.52 2.160.80.27 三、竖式计算(39=27分)2.030.27= 5.7632.087.5= 0.720.9= 90.753.3 1.052.4= 0.250.4=16.90.13 1.890.54= 四、方程。(第三行要检验31分 12x 9x = 8.7 5Y218 6.32x4.5=7.4 X-0.8X=6 12x-8x=4.8 1.2x=81.6x+5.6=9.4 x-0.7x=3.6 91x1
3、.3 练习二一.口算(0.530=15分)2.87-0.7 0.310.01 5.43+1.47= 7.20.1= 0.010.1= 0.250.4= 1.60.8= 12.5= 1.250.8= 3.20.04= 01.7= 0.22102= 9.60.8= 50.24= 4.50.05=3.90.13 16.50.5= 53.28= 0.464.6= 40.25= 0.81.5= 7.30.27= 0.50.125 4.50.02= 87.2=1.230= 0.0120.2= 1.30.3= 96= 3.60.12= 二、计算,能简便计算的就简便计算。(3x9=27分) 40.81.224
4、 (4628)60 4.25017.150.5 4.510.55 (10847)52 17.644.9+6.73 0.2512.53.2 5000-5623 125(97-81) 三、竖式。(3x9=27分)110.70.5410.13.3= 0.040.12 36.722.4 0.1251.4= 0.02514= 0.2540= 3.70.016 5.616.1= 四、方程。(31分) 4x-x=249 x+24=110 3x+5=77 18(x-2)=270 12x=300-4x 7x+5.3=7.4 1.48-2x=6 (4分) 3x5=4.8 91x 1.3 41-3x=17练习三 一
5、、口算。(0.5x30)0.27+0.3 10-0.4 2.60.3 80.125= 4.50.9 8.510 5.20.2 0.540.6= 0.610.39= 0.5628= 1020= 4.080.4= 119.4= 0.80.11= 0.7212.8= 5.60.01= 2.3100= 0.75100= 0.1082= 10.89=0.70.8= 165.07= 4.20.4= 0.726= 120.5= 5.20.4= 12.20.2= 5.6100= 0.413.7= 0.020.5= 二、计算,能简便计算的要简算。(3X9=27分) 3.4(1.20.5)5 5.830.524.
6、80. 583 5.42.497.513.6 8.32.632.731.5 3.687.562.68 7.852.340.854.66 35.61.815.67.2 3.822.90.189.1 1013.8三、解方程。31分 3x816 3x+9=27 5.3+7x=7.4 x0.8=90 48+2x=36 X-0.8X=6 (检验) 12x+8x=4.8 4.2x2.74=6 0.8xx=5.4 5x+x=9 检验 四、竖式计算。3X9=27分7.81.4 (保留三位小数) 3053.5(保留三位小数) 0.3750.025 5.7632.087.5=0.430.28= 1537.2(循环
7、小数表示) 90.753.3 1.052.4= 练习四一、 口算。15分2.516= 0.1082= 1.7532.5= 165.07= 5.213= 1.6441= 1.020.2= 0.260.3= 8.40.02= 1.296= 0.80.05= 12.60.03= 8.710.1= 210.21= 0.80.13= 0.3417= 8.080.4= 0.52.2= 2.4+12.5= 3.56-0.3= 0.3= 4.50.4= 0.630.7= 1.80.4= 9.581019.58= 1.244= 3.270.63= 5.020.3= 0.30.5= 85(10.9)=二、 计算,
8、能简算的要简算。27分6.710.524.80.671 3.82.497.514.2 20+804-20 100(32-30)0 254-125 70(42-42)187565+7535 0.2516.24 10245 三、解方程。31分4.2x2.74=6 0.8xx=5.4 5.33x=6.8 6.32x4.5=7.4 (x-2)3=7 (200-x)5=30 (检验) x5+9=21 7(x-2)=49 9x-3x=6 四、竖式计算.27分 3.70.0165.616.1=5.2229= 6.210.3= 13.953.1= 5.566= 0.0420.54 28.146.7 3.541
9、3 练习五一、口算。15分1.450.2= 0.88044= 21.2= 12.50.8= 10.20.2=06.39= 5.78-1.06= 13.6-2.7= 76.8-5.9= 36.2-13.6=25.1+25.7= 35.8+34.9= 63.3+3.83= 34.1-10.9= 36.8-5.2=6.40.5= 2.52= 0.510 0.68= 2.12= 2.810= 0.70.8= 0.0420= 5.6+0.4= 4.7+2.3= 4.52= 6.92.5= 7.20.8= 63.4= 0.620.32= 二、计算。27分 0.398+0.36+3.6415.75+3.59
10、0.59+14.25 972.50.4 250.32125 2.87.82(2219.7) 1.233.40.236.6 (2.50.25)0.4 3.63.60.5 0.511(3.225.28)三、方程( 31分)3X+5X=48 14X-8X=12 65+2X=44 4.5-X=1.5 28+6X=88 32-22X=10 24-3X=3 10X(5+1)=60 20X-50=50 56-2X=20 (检验) 四、竖式.(27分)4.6922.3= 5.52.02= 3.140.68= 7.856.3 5.261.6 8.40.25= 52.60.252 3.071.5 3573 练习六
11、一口算。15分1.40.5 11100 = 6.51.3 9.650.1= 0.325100=4.97= 00.48= 1.5736= 3.52100= 3.548=6.44= 7.21.8= 0.70.35= 0.721.44= 0.480.04= 1.252.5= 5.555= 16.88= 0.542.2= 3.50.05=10.50.4= 1.28 2.52.5= 2.4(0.254)= 7.5-1.52=06.39= 5.78-1.06= 13.6-2.7= 76.8-5.9= 36.2-13.6=二、计算能简算的要简算。27分32.40.90.132.4 3.070.381.62
12、6.70.783.38.22 3.74.54.43.7 0.250.254 (79.7442.4)0.90.9674923.825 8.32.632.731.5 3.6102 三、竖式计算。(27分)3.24 2.5 5.930.76 7.80.35=3.70.0165.616.1=5.2229= 12645 5.340.25 0.250.046(保留两位小数) 四、解方程。4y+2=6 x+32=76 3x+6=18 16+8x=405x21.83.6 7(x1.2)2.1 6.32x4.5=7.4 x-5.6=9.4 1.8+6x54 813x=9 X+8.3=10.7 48-27+5x=
13、31 练习七一、 口算.(0.5x30=15)2.58= 0.560.7= 0.1254= 3.280.1= 3.90.13=7.80.6= 25= 4.55= 0.30.6= 0.960.2=7.20.8= 1.40.5= 840.21= 0.750.25= 1.26 7.90.1 7.64 4.53 0.650.1 (1.50.25)4 4.7+2.3= 4.52= 6.92.5= 7.20.8= 63.4= 0.620.32= 1.40.5= 0.7510= 0.20.5= 360.3= 二、竖式计算。(3x9=27分)0.430.28= 3.080.43= 150.25 4.51.8
14、2.6880.56 0.3750.025 5.7785.4= 1.50.25= 5.2229= 三能简算的要简算。27分6942+4803 30.532-154 1.919.9+199.90.3 73.81.6413.85.36 47.87.45+8.8 5.50.672(22.2) 4. 050.5+10.75 21.60.81.25 6.82.7+2.73.2 8. 四、 解方程2x-100=796 x-8=6x 3x5=4.8 0.8x-4=20 2x-6= 12.6 7x+7=14 检验 99X=100-X 4X+3=18 2X-6.4=12 3X+5=9.5 练习八一、 口算15分0
15、.610.39= 0.5628= 1020= 4.080.4= 1.20.3 =0.250.4= 1.60.8= 12.5= 1.250.8= 3.20.04= 01.7= 0.22102= 9.60.8= 50.24= 4.50.05=3.90.13 16.50.5= 53.28= 0.464.6= 40.25= 0.81.5= 7.30.27= 0.50.125 4.50.02= 87.2=1.230= 0.0120.2= 1.30.3= 96= 3.60.12= 二能简算的要简算。27分8.32.632.731.5 6.94.83.1 15.89(6.755.89) 5.6(3.61.23) 0.4566.223.78 29.45.12.3= 46.9(6.444.14) 0.38102 4.82.54三,竖式计算。27分0.580.2= 16.90.13 1.890.54= 3.080.43= 0.254.8= 0.250.046 0.3961.2= 205.674 6.847.45 四、解方程。31分4x56=12 23x-14x=14 x+7x=8 6x-8=4 8x3x=15.6 30(x4)=60 检验 7.20.53x=1.2 966+4x=56 4x+13=365 3x27=40