五年级计算题竞赛试卷姓名:一、口算(18分)4.7+2.3=0.125×8=12.5÷5=0.108÷2=4.5×2=6.9－2.5=7.2×0.8=6×3.4=0.62－0.32=1.4×0.5=0.75×100=5.6÷100=0.96÷2=0.72÷3.6=3.6÷24=0.8×1.1=46.7－3.8=1.64÷41=二、竖式计算。（18分）0.59×1.4=0.19×7.5=246.4÷13=15.6÷12＝6.8×0.65=0.24×15=以下各题得数保留两位小数4.7×0.018=19.4÷12=1.35÷27＝三、用递等式计算下面各题。（24分）（124-85）×12÷2685.7－（15.3－4.8）1.08×0.8÷0.272.05÷0.85+33.69.07-22.78÷3.429.6÷7.4×2.46.8÷0.34+1.250.65×12÷0.132.06×1.5-1.120.75×18÷0.157.28+3.2÷2.52.07÷0.23÷0.45四、用简便方法计算下面各题。（12分）2.33×0.5×0.41.2×2.5＋0.8×2.56.7×10.14.85×9928×17.5－28×7.5102.56÷2.5÷43.66×0.8＋0.34×0.8－0.8五、解方程。（28分）X+0.3=1.80.2x=6x÷1.1=33x+6=184x-3×9=293.85+1.5x=6.113.2x+9x=33.32x-7.5=8.58x-3x=1052(x-2.6)=8(x-3)÷2=7.56x-0.9=4.5x+2.4x=5.13(x+2.1)=10.5
