五年级数学速算比赛题.doc

一.口算2.40.2= 4.80.6= 9.60.3= 3.2424=3.240.24= 3.70.016= 13.760.8= 5.20.6=8.41.3= 6.40.5= 二.脱式计算(能简算的就简算)1.2558 7.682.48 321252.5 0.40.70.25 2.788. 82. 782.2 三.竖式计算(除不尽的保留两位小数)0.560.8= 4.8 11= 1.072.4= 12.60.28= 5.812= 一.口算4.480.4= 5.255= 35.44.2= 0.0420.54= 0.760.32= 3.242.4= 2.42= 480.6=9.60.3= 0.240.2= 二.脱式计算(能简算的就简算)6.250.256 68.04（0.213.6） 19.752.5-3.55 17.52.3-7.52.3 1.251140.8 三.竖式计算(除不尽的保留两位小数)3.760.25= 20.424= 1.80.03= 752.5= 14.780.66一.口算0.250.046= 2.523.4= 1.0825= 0.430.28= 6.450.73= 4.86= 0.960.03= 2.40.2= 4.80.6= 9.60.3= 二.脱式计算(能简算的就简算)2.57.14 16.129916.12 5.20.90.9 2615.715.724 7.2899+7.28 三.竖式计算(除不尽的保留两位小数) 7.62 0.238.9 2.890.8 21.20.22 1250.08一.口算4.60.6= 8.90.05= 3.080.43= 1.526.7= 0.90.8= 25.86= 22.83= 5.980.23= 19.765.2= 3.817=二.脱式计算(能简算的就简算)4.3500.2 642.640.5 (2.275 0.625)0.28 3.94+34.30.2 2.75.43.9三.竖式计算(除不尽的保留两位小数)7.372.6 967.3 3.256.88 0.375.6 2.612 一.口算0.3242= 2.471.3= 2.170.7= 0.40.01=10.5= 7.0910.8= 0.87.09= 9.5101= 3.810.1= 7.69101= 二.脱式计算(能简算的就简算)1.2(9.62.4)4.8 8.053.4+7.6 8.91.14.7 6.584.50.9 3.69.85-5.46 三.竖式计算(除不尽的保留两位小数)0.933.9 6.690.3 768.33 5.430.9 0.472一.口算0.963= 1.470.7= 5.46= 1.280.4= 780.6= 9.599= 13.50.98= 0.20.26 0.144 0.020.1 二.脱式计算(能简算的就简算)2.80.5+1.58 324.90.9 (1.250.125)8 56.59956.5 4.84.80.5三.竖式计算(除不尽的保留两位小数)8.324= 5.921.6= 0.630.15140.418= 9.189=一.口算1.20.3= 0.20.4 8.21.8 10035.22 2.34 650.05= 540.12= 320.4= 360.18= 420.003=二.脱式计算(能简算的就简算)4.8100.1 4.85 + 0.35 1.4 9.5101 12.50.42.58 7.0910.80.87.09三.竖式计算(除不尽的保留两位小数)243.26.4= 70.28= 0.1380.15=2162.7= 6.432=一.口算2.50.4 2.45 0.224 3.250.5=3.990.1 9.63.2= 780.06= 450.005= 810.03= 7.20.002= 二.脱式计算(能简算的就简算)0.873.16+4.64 0.68 （5.2 -3.5） 1.25 8.7 17.4 - 8.7 7.440.5 0.81 0.18 4.8 （15 2.4）三.竖式计算(除不尽的保留两位小数)1040.52= 75.61.8= 8.910.27=2.6x0.13= 0.211.4=一.口算10001.25= 03.52 12.58= 102.5= 1200.024= 7.55= 8.60.002= 0.00363.6= 3.810.1= 0.12572= 二.脱式计算(能简算的就简算)2.13.0.8257 6.81+6.8199 6.81+6.8199 0.2518540 4.40.83.40.8 (9.37+9.37+9.37+9.37) 25三.竖式计算(除不尽的保留两位小数)1.120.56= 7.350.21= 19.84.5=2.5x10.3= 0.702x15=一.口算8.62= 2.50.005= 0.452.5 0.81.25 0.33.6 0.30.3 0.360.0006= 7.52= 6.321= 3.40.2= 二.脱式计算(能简算的就简算)42.1.254.21.75 2.51.250.32 3.810.1 2.376.3+2.373.7 2.5(3.80.04) 6.80.750.5三.竖式计算(除不尽的保留两位小数)3.15x0.14= 12.7x0.14= 2.3x11.2=3.9x0.3= 58x0.009=一.口算8.60.0043= 460.0023= 7.20.4= 2.81.4= 8.40.0084= 1.283.2= 100.07 0.31.4 0.057 9.80.7= 二.脱式计算(能简算的就简算)3.750.1252.75 1.53+23.47.2 9.59913.50.98 12.58.8 3.810.1 三.竖式计算(除不尽的保留两位小数)6.7x0.03= 0.68x0.04= 3.9x5.6=0.285x1.7= 1.37x0.04=一.口算4.60.023= 390.0003= 0.920.4 5.050.5=133.0007= 0.0090.005= 300.01= 2.57.1=0.292.9= 0.557.1=二.脱式计算(能简算的