1、0.72+0.72四、解方程3x+5=47 14 x -8 =20 65+2 x =4420 x =50四下计算专项练习2一、直接写得数。700.01= 2.5110= 1.10.4= 0.326100= 0.870.6=0.10.01= 6.9-6= 0.9+0.6= 1-0.09= 0.9+0.1=0.560.04= 0.290.07= 6.70.3= 561.3=3.22.5= 2.61.08= 0.8771= 2.542=3.516= 1.823=15.89-(5.89+6.98) 75.6-10.8-9.2 0.1259.380 4y+2=6 x+32=763 x +6=1816+8
2、 x =40四下计算专项练习3730.01= 5.150.4= 10-0.3= 0.70.2-0.20.7=0.1= 0.870.6= 0.81+0.09= 1.1-1= 0.326100=0.370.4= 1.0625= 78.06= 0.60.39=270.43= 1.70.45= 1.21.4= 2.340.15= 0.861.2= 0.378.4= 4.83.63.83.6 7.09997.09 0.340.42x-8=8 x+5=7 12x-9x=9 16+8x=40四下计算专项练习43= 0.725= 2.054= 2.50.4= 7.50.4=6.250.81 1.842.06
3、8.773.31 8.15.2 13.9-3.9=212.84= 24.32+8= 6.825= 2.583= 58+1.6= 36-2.4= 2.56+3.7= 1.560.08=1.03+5.3= 0.25280=4.232-4.217+4.285 0.257.640.4 881.2532y-29y=3 80+5x=100 3x 8=6 78-5x=28四下计算专项练习50.150.5= 1.86= 10.23= 2.54= 0.65=200.5= 0.93= 1.055= 2.163.84= 0.80.6=4.850.73= 25.738.3= 95.48= 56.70.14=6.83.
4、54 18.90.35 10033.9= 0.281.5= 1.44+18= 0.353.6=12.712.50.54.60.40.3990.46X =24 4y-24=165X6=2.5 3X4X=14四下计算专项练习61、直接写得数。 1.06+9.4= 20.2= 9.93+0.1= 4.044= 2.4 10-2.3= 5.24= 0.245= 2.50.4= 7.210=2、竖式计算。1.121.1= 0.3261.3= 6.56.5= 3.32.6=0.985.5= 2.12.15= 5.22.9= 26.40.063= 0.150.65= 21.56+6.746.7253.375
5、 10312 14.85-(4.85+2.5) 5.34+X=26.7 5X+3.5=13.5 X+2X=45 X0.6=4.5 四下计算专项练习71直接写得数。 1504= 8690= 7309= 0752= 93+254= 112+88= 769= 1258= 317= 10253= 52+048= 10098=2竖式计算。 106566= 791208= 023025= 012505=3= 0.725= 2.054= 12.47=12= 6.73用简便算法计算。 482101 12599 976072-076072+0724. 25厘米=( )米 75千克=( )吨 120分米( )米
6、6075克=( )千克 850克=( )千克 7角=( )元。9吨67千克=( )吨 4千米500米=( )千米 3元8角5分=( )元 54吨=( )吨( )千克 304吨=( )吨( )千克 705元=( )元( )分 102元=( )元( )角 38米=( )米( )分米。1t=( )kg ( )g=1kg 1km=( )m20.06t=( )kg 4850m=( )km 500kg=( )t0.845dm=( )m 0.784t=( )kg 3.08t=( )kg四下计算专项练习813.48= 5.64= 234.7= 102.3=7.54= 2.340= 40100= 3.50.60
7、.23= 0.340.45= 0.060.7= 0.051.6=3= 0.724= 12.46.70.3= 6.72.312= 3.74.6= 8.55.677.55.67 4.51.141.51.24 6.2+3.52544、解方程4y+2=6 x+32=76 3x+6=18 16+8x=40四下计算专项练习90.30.07 10.75 4.54 320.080.840 80.810.1 5.376.3 0.960.74104.5 5.30.2 24311000 4.1990.73= 5.738.3= 95.48= 8.521.36= 61.37= 2.520.12= 8.70.67= 41
8、.215.6=21.56+6.74= 5037.5=3、脱式计算,能简算的要简算。0.71010.7 0.1254.78 12.51.682.32 5672054、解方程 8x-3x=105 2(x+3)=10 12x-9x=9 6x+18=48 56x-50x=30四下计算专项练习101、直接写得数100= 7.210= 93100=0.251000=15.9+6.1= 60010= 78+2.22= 0.5-0.06=3.1711= 0.4+7.5= 9.3-2.7= 1-0.09=3.67+20.438= 100.7-9.603= 0.3253.6= 14.39+2.4= 3.946.8
9、6= 5.40.9= 2.170.73= 4.35+6.25=41.215.6= 21.56+6.74=990.625+0.625 (53.76-17.49) 1.8 1.5991.5 9.141.434.574、解方程。 5.34+X=26.7 5X=13.5 X+2X=45 X0.6=4.5 6XX56 四下计算专项练习1113.48=6.64=234.7=102.3=0=4100=3.50.60.23=0.340.45=0.060.7=0.0516=5.50.34 12.546.14.6 0.360.80.50.25 0.37420= 7.25-0.246= 7.35+8.195.30.14 7.29-0.18= 6.599+6.5 4.851.258 4.53.65.53.6 (0.50.25)80X9070 3X618 X6542 3X5X48 8X3X105
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