2013-2014学年度第一学期五年级计算能力竞赛试卷学校：班级：姓名：分数：一、口算。（每小题0.5分，共34分。）3.24÷0.8=0.6+89=5.7×0.1=1.6÷0.4÷2.5=6÷0.3=5÷0.25=0.45×3=1.25×0.35×8=7.1-0.76=1.2×0.3=0.76÷4=0.04×25×1.01=4.2-2.8=7.3÷1.82≈19.8+3.2=18-17.45-0.54=12.84÷1.2=0.75x+0.25x=2.5×4=0.49×0.7×0+0.49=0.7×1.4=1.6÷16=8.1×0.125≈2.2×0.3-0.2×0.3=10a-1.8a=4.8×0.2=0.3÷0.15=0.15÷2×5=0.52÷0.04=2.2-1.99≈20÷0.26≈32.8-(1.28-0.2)=0.42×0.5=30.6÷0.6=3.06-0.72=0.7×0.3×0.1=5.2÷13=8.2×0.01=0÷12.5=1.6×0.4+0.4×0.9=0.8b×125b=2.5×4a=0.3×101=9.25×0.8-0.8×8=0.2×0.5=1.44÷20=0.76+1.24=5.28t-1.99t=0.63÷90=4.5+1.5=3.9÷0.13=1-0.92+0.08=3.1+1.75=1.2÷2.5=1.72-0.73=7.8÷0.13×6=t×2.5+4=5.4÷3.1≈4.07×3=f×0.8×1.25=1.98×0.8≈8÷1.25=3.4÷20=0.4×0.252≈0.51÷170=450÷0.15=1.3×1.1=0.2c×0.5b=二、竖式计算（每小题2分，共6分。）0.43×0.270.45×5.343.45×0.016（得数保留两位小数）（精确到0.01）（精确到0.1）三、竖式计算（是循环小数的用循环小数表示商）（每小题2分，共6分。）4.25÷0.3125÷2.715.3÷11解方程（每小题3分，共18分。）4(x-0.3)=4.81.6x+3.2=9.64x-3×9=29x-0.2x=9.620+x÷0.5=36（10-9.9）÷x=1、五、能简算的要简算。（每小题4分，共36分。）23.2-3.2×6÷1.29.4×5.8＋10.6×5.89.6+9.6×990.125×0.32×0.2516.84÷40÷0.259.9×10.14.2×7.8+3.2×4.2-4.22.55×101-2.558.8×1.25