小学五年级口算竞赛试题
小学五年级口算竞赛试题一
小学五年级数学速算比赛试题（一）姓名________ 分数________口算0.36÷0.4= 6.3÷7= 0.64÷0.8= 0.72÷3.6= 3.6÷24=0.8×1.1= 7.2+12.8= 46.7－3.8= 10÷20= 24÷15=12.8÷4= 5.2÷13= 12.5÷5= 1.64÷41= 5.6÷100=8.65×10= 0.35×0.6= 3.08×0.01= 4.95×1000= （1.2＋8.8）×0.4= 0.4×0.5= 2.4÷0.8= 10.8÷9= 9.6÷0.8= 0.108÷2=4.95÷0.9= 9.65÷0.1= 0.325×100= 2.5×8= 0. 56÷0.7=0.125×4= 3.28×0.1= 3.9÷0.13= 0.25×0.4= 1.6÷0.8=1÷2.5= 1.25×0.8= 7.2×0.1= 0.01×0.1= 3.2÷0.04=0.22×102= 9÷0.25÷4= 0.25×3.97×4= 0÷0.125= 6.9×0.1=0.75÷0.25= 0.125×8= 0.86÷2= 0.56÷28= 0.36÷0.4=0.7×9= 3.6÷24= 0.8×1.1= 46.7-3.8= 12.8÷4=5.2÷13= 1.64+4.1= 10÷20= 24÷15= 0.35×0.6=4.7+2.3= 4.5×2= 6.9－2.5= 7.2×0.8= 6×3.4=0.62－0.32= 1.4×0.5= 0.75×100= 0.02×0.5= 3.6÷0.3=1.2×500= 756÷7= 494-98= 0.25×48= 0.4÷0.08=875+12.5= 3÷0.125= 9.6÷32= 9.83-8.3= 3.6÷7.2=3.23－0.9= 5.25×4= 12-6.8-2.2= 5.2+0.37+4.8= (0.15+5)×4= 28.3-5.3+7.3= 0.25×32×1.25= 7-1.45+0.55= 15÷0.5×2= 5.82-(4.2-0.18)= 3.6÷0.5×2= 7.2÷0.2÷18= (200+4)×25= 18÷0.125÷8= 4.75×120÷475= 1.5×8+8×1.5= (0.25+12.5)×8= (8-1.25)×8= 1.8×9+3.2×9=3.52÷1＝37.2×99＋37.2= 708×28≈ 6.4÷4﹦ 1.5÷0.3﹦5392÷9≈ 1×0.4÷1×0.4= 1.8×5﹦7.2÷0.9﹦640×12≈8.4÷0.4﹦25×4÷0.25×4= 2.2×6﹦271÷31≈ 4.5÷0.9﹦294×3≈ 11.9÷5－1.9÷5﹦ 2.5×4﹦ 25×3.3×0﹦ 2.5×0.4=0.42÷7= 7.2×88＋12×7.2﹦0.3÷0.1﹦420÷58≈ 1.2÷0.04=240÷77≈ 1.25×3.3×8﹦789×4≈ 0.7+3= 1.2×0.8=6.3÷0.021= 0.9×7+10.7= 1.5÷0.03= 6.8-2.4÷3= 632÷91≈5×0.7= 0.6÷0.3+0.5= 0.43×5= 3.6÷0.9-4= 240÷37≈3.6-0.36= 1.8÷0.9×0.5= 8.1-2.2= 72×125= 6.8＋8.6=9.4×0.2= 6×0.125×8= 580-400= 43×0.01﹦ 3.72×0.2=二、脱式计算（每题2分，共40分）1280÷16÷8 27.3-7.3-2.7 9.8+26.5+20.2 3200÷4÷25= = = =17×23-23×7 2000÷125÷8 6.7+2.5+3.3+7.5 12.5×(8×14)= = = =99×3.8+3.8 2.5+7.5-2.5+7.5 48.7-18.7-13.9-6.1 2.5×(4+8)= = = =13.5+39+6.5+11 60+255+40 1250÷25÷5 800-138-162= = = =（85-63.7）×（13.8÷6）0.25×80-0.45÷9 762÷125÷0.4 8.6+7.8×34÷6.8= = = =五年级小数点口算题3.4－1.4= 7.82－7.2= 2.19＋9.1= 10.1－0.89= 0.68＋0.42= 8.1－5.1=0.728－0.24= 0.8＋0.18= 0.89－0.25=1－0.98= 0.048＋0.52= 5×400= 19.9+11.1= 187÷1000= 1+3.89=0.081×10= 75÷10= 0.96÷0.8=0.8×7＝ 1.5×7＝ 1.32×8＝0.7×8＝ 10.3×2＝ 5×0.6＝0.9×0.3＝ 3.5×0.2＝ 2.01×0＝10×0.05＝ 0.13×7＝ 0.21×100＝0.7×4＝ 0.05×4＝ 4×0.3＝12.5×8＝ 2.3×4＝ 3.25×0＝0.4×50＝ 30×0.1＝ 2.6×3＝4.1×2＝ 0.35×0.2＝ 7.5×0.1＝1－0.08＝ 3.5×0.01＝ 1.25÷0.25＝0×9.8＝ 3.9＋0.39＝ 4.8＋5.2＝0.5×0.4 ＝ 4÷0.25＝ 3÷4＝8.1÷9＝ 2.5×4＝ 6－0.025＝3.6＋6.3＝ 0.05×4＝ 3.5×0＝0÷3.5＝ 0.9×0.3＝ 1×0.06＝五年级数学口算练习9×0.5＝ 1.25×8＝ 2.6×3＝4.1×2＝ 0.35×0.2＝ 7.5×0.1＝0.9×0.3＝ 1×0.06＝ 9×0.5＝1.25×8＝ 0.2×0.4＝ 8.2＋1.8＝100－35.22＝2.5×0.4＝ 2.4×5＝0.22×4＝ 0.9－0.52＝ 3.99×1＝0×3.52＝ 2.5÷5＝ 8.4÷7＝0.34÷17＝ 2.5÷0.5＝ 8.4÷0.7＝0.34÷0.17＝ 30.4÷4＝ 1.2×6＝0.72÷0.6＝ 2.6÷1.3＝ 0.6×0.3＝0÷3.65＝ 7.82÷1 ＝ 0.001÷0.1＝1.4÷0.7＝ 3.6÷0.06＝ 5.6÷0.9＝5.6÷1.4＝ 0.48÷0.8＝ 4.4÷0.11＝4.2×3 ＝ 3.2×0.4＝ 0.3÷0.01＝4÷0.5＝ 5.1÷0.17＝ 0.28÷1.4＝0.9÷0.45＝ 9.6÷16＝ 1÷0.01 ＝0.01÷1＝ 7.5÷1.5＝ 0.81÷9＝3÷0.5＝ 10÷25＝ 4.8÷0.16＝0÷3.89＝ 3.52÷1＝ 37.2×99＋37.2= 6.4÷4﹦ 1.5÷0.3﹦ 1×0.4÷1×0.4= 4.2×3﹦ 1×0.01÷0.1= 1.25÷0.5=班级：姓名：五年级数学口算练习1.8×5﹦ 7.2÷0.9﹦ 25×4÷0.25×4=2.2×6﹦ 8.4÷0.4﹦ 9÷5－1.9÷5﹦4.5÷0.9﹦ 2.5×4﹦ 25×3.3×0﹦2.5×4﹦ 0.3÷0.1﹦ 37.2×99＋37.2﹦4.5×2= 7.8+0.22= 2－0.64－0.36﹦3.4×0.4= 12.6－0.9= 2－1.64－0.36﹦1.2÷0.04= 0.42÷7= 1.25×3.3×0﹦0.9＋2.01= 2.97÷100= 20－3.7－7.3=6.3+7= 2.19＋9.1= 5×0.75÷1.5×0.75= 0.65×0.2= 9.8-0.98= 1-0.1×0.1=0.7+3= 1.2×0.8= 0.9×7+10.7=6.3÷0.021= 1.5÷0.03= 6.8-2.4÷3=5×0.7= 0.43×5= 3.6÷0.9-4=3.6-0.36= 8.1-2.2= 0.6÷0.3+0.5=6.8＋8.6= 9.4×0.2= 1.8÷0.9×0.5=2－1.08= 8.8÷0.4= (1.6+0.5)÷5=43×0.01﹦ 3.72×0.2= 0.7×8-0.6=99＋0.1﹦ 3.2-2= 6×0.125×8=1.9×4﹦ 8.8÷0.11= 4×1.2×0.25=0.125×8﹦ 1.8×40= 2.5-3.6÷1.8=2.3÷0.1﹦3.72÷4= 13-0.5-4=1.1×0.7= 1.9+5.1÷51= 3.2×50=2.32-0.4=3.2×0.5= 8×5.1= 12-0.05×4= 16-4.5-5.5= 1.8÷0.3＝一、口算0.027×100= 8.8+0.12= 0.36×5= 0.75－0.5= 1.2+8= 9.5÷0.95=2.4-2.4÷1.2= 0.73+0.27×10= 0.15÷0.3= 1.6＋3.04= 2.8÷0.7= 5.7÷0.3=三、能简便的要简便计算（23×2）45.55－（6.82＋15.55） 34.52－17.87－12.23 4.57+3.17+3.43+5.838.54－5.99 27.38－5.34＋2.62－4.66 21.63＋（18.5－9.63）70÷28 2.31×1.2×0.5 12.78-(4.97-2.78) 63.4÷2.5÷0.499×4.3 8.23＋6.5-8.23＋6.5 3.12＋3.12×99 1.63＋2.37÷0.32.7÷45 2.4×10.2 23.9-0.6×0.6-0.64 2.4×1.87-2.4×0.8715.32×4＋4.68÷0.25 1.26÷(1.26×0.4) 28.6×101－28.699×3.8+3.8 2.5+7.5-2.5+7.5 48.7-18.7-13.9-6.1 2.5×(4+8)= = = =13.5+39+6.5+11 60+255+40 1250÷25÷5 800-138-162 = = = =（85-63.7）×（13.8÷6）0.25×80-0.45÷9 762÷125÷0.4 8.6+7.8×34÷6.8 = = = =五年级上册数学竞赛试卷（1）一、计算，写出主要简算过程（每题4分，共16分）1．567×789789-789×5675672．7.2×14.3÷0.9÷1.33．0.64×125×2.54．如果2△3=2+3+4=9，5△4=5+6+7+8=26，那么，按此规则计算7△5=？二、填空题（每题6分，共30分）1．一种水草长得很快，每天增加一倍。