1、部編版二年級數(shù)學(xué)上冊口算同步練習(xí)及答案（優(yōu)選）1、直接寫出得數(shù).3744476736752572737771742、直接寫出得數(shù)。1061271481781332142242543441751632783654573673、直接寫得數(shù)24354743721743247723996485536917542876299274681956279325421827154、直接寫得數(shù)。6415536126553065262661645、口算2+40=73+3=90-40=71+10=57-17=56-40=24-4=45-15=18+20=20+60=56+1=84-4=6、直接寫出得數(shù)35050=74

2、040=900400=20700=10100=80500=30007000=450400=5050=250300=600400=67030=1/51545493067287、口算。12615512412393662463051643455668、直接寫出得數(shù)。126884006002600600729606801856410080072361832641518429、口算。6512271161299242128033577520351128529616382247113654702535144030811569508414968010、直接寫出得數(shù)37=255=66=126=45=183=75

3、=305=65+8=66+7=47-9=67-8=11、口算3000+6000=46+38=500+40=1800-900=86-34=497=96=427=463=9+04=25+205=（25+20）5=12、直接寫得數(shù)。7820603990986809070741027958（237）13、我能算得又對又快2/535-279487+63932-1642+39889916437+166849754975455488279714、直接寫得數(shù)140+50=1400-400=98-34=40+50=200-30=45+25=480+120=5500-500=76-35=3000-800=400+

4、2000=850-320=30+700=84-26=50-15=20+46=297-10093+310395+2925990-300515、直接寫出得數(shù)6832246=55=8+53=372+299070=1600-700=9000-8000=3/5參照答案1211628421835101421497282141516214151526182325133716351359908967543532528247184929686042424318225510121454276508140162030388057806300700500720110580100005010055020064033659723343146412253682641000200087407433003633916953389050929055248080603690452170961970161021536220635638431934119000845409005275464/58；9；29；912、98；63；99；1220；84；36；2813、8；36；93；27；16；81；64；1；4；53；48；7；35；9；6；14；6314、190；1000；64；90；170；70；600；5000；41；