人教版五年级下册数学计算能力竞赛 (答 卷 时 间:10 分 钟 完 成,总分:100分) 姓名: 成绩: 一、口算。(40分) 0.24+6.9 = 9.1-7.3 = 1.2×6 = 7.2+2.8= 31×3 = 24×5 = 1000÷8 = 0.8×0.6 = 1.25×4 = 300÷50 = 480÷0.6 = 0.15×9= 3.4×0.7= 2.2×3 = 0.2×1.1 = 2.1÷0.3= 535421 889955二、下面各题,各样简便就怎样算。(60分) 11 42.15+8.73+1.27+7.85 11.87-(8.2+1.87) 5.42-3.87-1.13 4.38-1.56+0.62-0.44 0.4×270×2.5 (40+1.25)×8 (12.5-0.05)×8 2.6×8.5+8.5×7.4 9.9×6.9-6.9×3.9 5.6×99+5.6 2.5×(1.9+1.9+1.9+1.9) 7.2÷1.25÷8 本文来源:https://www.wddqw.com/doc/afeb5b3f70fe910ef12d2af90242a8956aecaa10.html