新人教版二年级数学上册口算专项基础练习2

1、新人教版二年级数学上册口算专项基础练习及答案1、我能算得对又快680-600=340-80=350+70=549=486=728=5000+3000=287=568=427=809=124=357=637=189=306=2、直接写出得数.8174889498639987776558455428597979883、口算3645960129810055158594351524479608794、直接写出得数。72980090091930501305035002000884865035637284305369432（3935）4194865、直接写出计算结果。48=88=46=74+7=49+7=

2、95=4+4=68+30=19=35+7=11-1=99-9=6、直接写出得数1/535+34=500+40=1200-400=569=80-35=400+6000=21+18=700+300=14+497=52-48=598-132405+1437、直接写得数。30090015008001406046214981027408119736039638、直接写出得数.459824882135765819635+564-9243（）218328488+7105756（）79、直接写得数89455684268948816242748208+6153029-1225627+2196217-205430

3、00+2345000-19810、口算84=69=87=67=31+8=65-45=30+56=97=89=53=66=44=95-5=56+34=85-3=45+5=11、直接写出得数300+400=68=650-40=305=819=3000+6000=648=76=1900-900=160-80=5500-500=600+800=12、直接写出得数。2/595=18+20=58-47=45=87-7=24+25=35+12=63=26+13=329=57=36-27=45+13=48=68-19+19=7+8=14-13=88=36+2=24+6+12=13、直接写得数。21328436

4、937584459962232503004000600700280250070014、直接写得数。30+54=71-11=98-45=7+35=55-15=67-40=6+27=13+47=86=76=84=35=875=796=557=738=15、直接写出得数。8640898596395673053825878008007000600160404000900430030006508030090028006003/5参照答案1802604206898000476883592528286445518156492527201645706434045481745540360183654817009

5、880801500181593262611153264243556458789420726695408006245640039100021450050071200700806715002000209985166735308542015249171148944777268632800200080040003200480010325456423920866372153616406437251170048610699000842100080500014004/512453811204949471839543595832681516438421377472325547155046009801800148