1、五年级计算题竞赛试卷 姓名:一、口算(18分)4.7+2.3= 0.1258= 12.55= 0.1082= 4.52= 6.92.5= 7.20.8= 63.4= 0.620.32= 1.40.5= 0.75100= 5.6100=0.962= 0.723.6= 3.624=0.81.1= 46.73.8= 1.6441= 二、 竖式计算。(18分)0.591.4= 0.197.5= 246.413=15.612 6.80.65= 0.2415= 以下各题得数保留两位小数4.70.018 = 19.412 = 1.3527 三、 用递等式计算下面各题。(24分)(124-85)1226 85
2、.7(15.34.8) 1.080.80.27 2.050.85+33.69.07-22.783.4 29.67.42.46.80.34+1.25 0.65120.13 2.061.5-1.12 0.75180.15 7.28+3.22.5 2.070.230.45四、 用简便方法计算下面各题。(12分)2.330.50.4 1.22.50.82.5 6.710.1 4.8599 2817.5287.5 102.562.54 3.660.80.340.80.8五、 解方程。(28分)X+0.3=1.8 0.2x=6 x1.1=33x+6=18 4x-39=29 3.85+1.5x=6.113.2x+9x=33.3 2x-7.5=8.5 8x-3x=105 2(x-2.6)= 8 (x-3) 2=7.5 6x-0.9=4.5 x+2.4x=5.1 3(x+2.1)=10.5