1、密封线信丰三小二年级数学下册口算竞赛题一、口算(每小题0、5分,共64分)213=364=182=637=99=4610=6540=819=5520=946=93=99=5832=8028=3360=546=408=()4=206113=155=7240=478=1485=6127=17020=8329=56=4317=2127=328=306=364=648=51=153=168=426=40050=3826=938=497=6 9=5630=355=27 25=77=8 6=639=59=66=77=490200=2056=567=340200=70=1677=5675=903=7030=
2、77=728=728=728=18030=1818=164=3022=3655=8217=180=792=204=204=150500=1000300=455=3366=819=5516=2523=1235=2771=4633=408=6060607216=4332=358=567=430510=670150=720250=47007002083=370310=1600400=600030549=480400=340210=8701208224=7038=2400900密封线30060=1567=3728=2555=35040=380401800200900800240801400600210
3、0700365844161479600030=200克800克()千克51千克7千克5克921千克19千克76克69克72千克81千克700克 87克19克二、计算(每小题1分,共30分)729425568198876=676=3632=554=50244=999=897=72729=8210=500+320+801233=588=5730=5060=4555551463 8 27=24156=1834=70(4032) 65(4025)=53(48+5)=989231+231=165+165165=1+11+111+1111+1111=7809+98=100001000100101=三、在里填上合适的数(每小题2分,共6分)3 82 38 99 20 71 0 2 71 0 002 2