小学五年级数学计算能力比赛试题

1、小学五年级数学计算能力比赛试题班级 姓名 成绩一、估算8120 3219 150031 9920 999500 63130 5980 88110 34970 1020100 719 4237 5940 8227 992.12 2983 1.257.98 494 0.4972.003 3982.09 10122.08 50710.14 2.5139.87 .02 0.09 48.970.21 398.70.396 51.0319.35 124.98.120.13649.88 810.0390.02 1.25379.46 14.892.16 59829.7 33.3332.98 52.118.75

2、 1.0330.21 60.23.01 49.8350.04 1042.1 818.9 150.31.98 9.872.13 10.045.02 98.872 25.18.03 9.951 382.13 4882.3 522.14 0.01299 1.875.06 1.267.881.020.51 10250.64 98.6921.3 0.20.51 2.4821 1001.98 1.90.52 5.230.522 3613.59 8.6698 5972.1 9.752.161012.03 1.52.004 4821 512.1 300.23.05 167.98 4120.3 1.020.98

3、7 1000.52001 0.5330.541 990.199801.631.998 4.9720.33 81.253 601.98 9.971.98 512.012 8022.478 4034.032 5155.149 182.997 3333.0003 1045.11.0260.1 0.262.61 3.59.98 4.79.97 12.528.03 469.98 389.99 569.89 4.3698.97 62.196.22 10.359.98 540.539二、口算636198= 3.60.36= 714= 375= 90.9= 720.4= 720.4= 2524 4.20.21

4、20.2 1.258 2768=910540= 1840=91070= 780.98=38= 100.1=0.812.5= 8.10.03=1.50.5= 100.5 0.510 41021071.4 72.80.8 0.770.33100.98.20.540.4626.2626=4.576.43= 7.9117.9= 3.1432= 10.130= 20.22= 1.840.5= 1.51.50.2= 578216 85.23.25 0.9990.99 82.53.25 3005-899= 7.25+2.75= 9.898 0.12598 =341103= 27018= 1.250.250.

5、75= 24.060.4= 25244.20.2120.2 1.2582768=910540= 1840=91070=780.98= 38=100.1=0.812.5= 8.10.03=1.50.5=3005-899= 7.25+2.75= 9.898 0.12598 = 100.98.20.540.462.825122.5= 12.5322.5= 26.2626=4.576.43= 7.9117.9=三、简便算法 2.825122.5 12.5322.5 3.4993.4 64.2870.6421300187.711187.7 0.1250.25324.81.01 0.4（2.573） （1.61.61.61.6）25 312.512.65.8421.26 7.59.81.258.8 2.53