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1、小学数学五年级(上)计算题知识竞赛班级: 姓名: 评分: 一:用竖式计算5.46.1= 2.150.17= 3.70.58= 1.450.12=43.50.12= 1.0160.08= 510.16 = 0.0362.5 = 62.5 - 36.8= 3.84 + 38.4= 5 - 1.65= 0.0.60.52=二:用竖式计算(得数保留两位小数)29.60.21 6.723.7 0.329.07 8.730.482818 11.0417 1.78 0.090.56 0.910.3 2.840.26 118 0.7621.3三:求未知数x1.908 x = 0.72 3.75 x = 0.4
2、5 x8.05 = 2.360.954x = 0.36 x13 = 11.05 x + 0.87 = 6.25 x 0.39 = 1.25 x0.92 = 46 4.01 x = 0.87四:用脱式计算下面各题13.50.272 3.820.90.18 5.04(30.12)32.4-0.751.2+4.1 (0.69+0.11)(0.8-0.16) 3.81.4+18.60.748.72(0.97+1.43)0.15 0.7(21.11+15.3)4 21.63-15.70.9360.45-360.458.92.7 81.990.9(1-0.83) 32.4+17.61.67.6-0.33.
3、5-0.8 3.28+17.53.51.62 0.63(1.3-8.248)(15.6+15.699)13 8.9+8.9(8.9-8.9)8.9 12-(5.7+1.9)(4.8-3.8) 五:用简便方法计算下面各题90.254 63056 7.23.2 8.43.50.1512.520.08 17.60.1+0.917.6 5.635 19.83.34.20.76 4.90.77 3.70.52 (0.4+8)0.1251.258.8 0.2532 12.618 7.590.12580.580.8+0.420.8 (0.48+0.54)6 7.23+7.239911.7534.2+8.253.42 8.26-2.15-3.65-0.2 0.250.51.2564