五年级计算竞赛模拟题（一）一、直接写出得数：0.2×0.6=1.6÷0.8=4.2÷2.1=0.5×8=47.6×1=4.6÷0.46=0.52÷52=7.1÷0.1=3.6×0.4=4÷0.5=1.25×8=12.4+2.1=3.5-1.5=0.7+3=0.25×0.9×4=二、竖式计算。0.38×0.253.05×0.1216.787÷0.2815.3÷11（积保留一位小数）（商保留两位小数）（商用循环小数表示）三、解方程：X－2.5=100.4X=123.2+X=402X-20=4四、脱式计算，能用简算的要简算。0.25×9.87×436.7×2.1＋10.88.8×0.1256.25×1.0223+4.6÷2.32.5×1.25×32五年级计算竞赛模拟题（二）一、直接写出得数：7.2＋2.8=12×2.5＝2.63＋0.37＝0.96÷0.3＝1.8×5=8.4÷4.2=1-0.82=9.6÷0.3=2.8÷7=100÷0.01=0.68＋0.42=75÷10=0.96÷0.8=1.2×6＝0.6×0.3＝二、竖式计算。7.02×0.56=4.3×8.1418÷24=78.6÷11（积保留一位小数）（商用循环小数表示）三、解方程：8+4X=562x-7.5=8.54x-3×9=29四、脱式计算，能用简算的要简算。5.67×0.2-0.6297.5÷0.39－136.71.65×99+1.6512.96－（9.96－1.52）1.2÷0.25＋1.3×43.52÷2.5÷0.4五年级计算竞赛模拟题（三）一、直接写出得数：9×0.4=10×0.01=4.3-0.25=1-0.82=9.6÷0.3=2.6×0.01=0×25.4=0.84÷0.6=2.8÷7=6÷0.03=100÷0.01=3.4－1.4=7.82+7.2=0.72÷8=0.5×0.6=二、竖式计算。5.4÷0.036=4.8÷230.34×2.9=（商保留两位小数）三、解方程：2（X—0.6）=42.4×0.3+0.2X=1.2(X-3)÷2=7.5三、脱式计算，能用简算的要简算。0.68×1.9+0.32×1.91.65×99+1.6512.5×7.4×0.80.18＋4.26－0.18＋4.262÷2.5+2.5÷224÷2.4－2.5×0.8五年级计算竞赛模拟题（四）一、直接写出得数：4.5÷0.9﹦2.5×4﹦25×3.3×0﹦0.3÷0.1﹦4.5×2=7.8+0.22=3.4×0.4=12.6－0.9=1.2÷0.04=0.42÷7=0.9＋2.01=2.97÷100=6.3+7=2.19＋9.1=65×0.2=0.7+3=1.2×0.8=6.3÷0.021=1.5÷0.03=5×0.7=二、竖式计算。（第1、2题要验算）0.37×8.4＝51.3÷0.2745.5÷38（商保留两位小数）三、解方程：8(X-6.2)=41.6X-0.4×5=1.2（6.8+2.6）X=28.2四、脱式计算，能用简算的要简算。5.6-1.6÷411.16÷（10－0.7）40.5÷0.81×1.056.72-3.28-1.720.25×363.2×0.25×12.5