珠心算除法练习题

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2276409005×91＝8194556321×67＝4235078135×94＝7646907001×17＝1190175020×25＝1255006846×75＝5134508070×72＝5810406003×36＝2161084210×85＝3578506300×78＝4914005172×39＝201708125×468＝58500375×864＝324000875×468＝409500625×864＝540000501×208＝104208726×135＝98010802×501＝401802950×180＝171000360×250＝408×205＝2468012÷2＝123400636927063÷3＝12309021481203672÷4＝120300918189036495÷9＝2100405530576025÷5＝611520524360128472÷6＝401002141291350021784÷7＝13050003112100000000÷8＝125000005000000÷4＝1250000700000÷8＝8750086401236÷4=2160030916204860÷400=405121590281574÷200=45140787750418200÷2000=375209140026080÷50=80052168106279300÷300000=270209318162432÷8=102030427360459÷9=304005135014917÷7=500213148062430÷6=8010405

商除法：三舍法：除数首位是任意数，第二位是1、2、3时，用三舍法，即用除数首位与被除数的前两位进行判断估商。1764÷21=84924÷22=421958÷23=861612÷31=321888÷32=593003÷33=912255÷41=553192÷42=763311÷43=773366÷51=663068÷52=594611÷53=875185÷61=855246÷61=865890÷62=953591÷63=575538÷71=787056÷72=986862÷73=947047÷81=875330÷82=654814÷83=589009÷91=98096÷92=881674÷93=181872÷208=99792÷306=328910÷405=2232576÷509=6434257÷601=576318÷702=97263÷807=98127÷903=9810÷205=42709÷301=92040÷408=52008÷502=45481÷609=94942÷706=74020÷804=5189÷21=9154÷22=792÷23=493÷31=3128÷32=4165÷33=5205÷41=5336÷42=8301÷43=7408÷51=8468÷52=9371÷53=7549÷61=9558÷62=9567÷63=9639÷71=9432÷72=6365÷73=5729÷81=9656÷82=8498÷83=6819÷91=9828÷92=9744÷93=8368÷92=4654÷218=3888÷222=4932÷2344945÷315=5963÷321=3999÷333=3814÷407=22060÷412=503400÷425=83888÷432=94040÷50=82590÷518=54707÷523=74864÷608=84230÷705=61881÷209=91585÷317=52130÷426=53048÷508=64878÷613=85800÷725=82493÷831=36356÷908=73272÷824=44296÷726=62068÷517=42814÷402=7981÷327=31040÷208=5632÷316=2864÷432=21050÷525=21278÷639=21440÷720=22×123=2463×321=9634×125=5005×246=12306×721=43267×809=56638×375=30009×901=81092×504=10083×975=29254×325=13005×864=43206×958=57487×793=55518×625=50009×314=28269×789=71018×875=70007×394=27586×567=34023×9001=270032×405=8104×50002=2000085×600008=30000406×1000005=60000307×207=14498×5001=4000089×30000009=27000008113×7001=210034×200005=80000205×4682=234106×3005=18037×40001=2800075000008×8=4000000649×109=9818×1005=81409×901=81817×30007=2100496×501=30065×8642=432104×500001=20000043×90002=2700062×30004=600081×6789=67892×400005=8000103×2003=60094×10005=400205×4682=234106×1005=60307×302=21148×1005=80409×30009=2700816×80005=4800305×4008000=200400004×102000=4080003000×201030040=603090120000200×50200300100=100400600200008000×1005000608=8040004864000700×30200100040005=21140070028003500600000×1020500=6123000000004000×0.10005=40020.08×5.0102=0.4008169000×3070200=2763180000007000×0.70105=4907.350.006×0.05018=0.0003006480.5×0.0248=0.01240.004×0.625=0.00350.8×0.00875=0.00786100÷205=427881÷213=37168000÷224=7593330÷306=30527666÷318=8731458÷321=9820979÷333=6370350÷402=17528773÷417=69357000÷425=8406480÷432=15333000÷444=75034068÷501=6850343÷519=19736156÷524=6940350÷538=75222507÷603=36945900÷612=75300000÷625=48046694÷631=7460180÷708=8525812÷717=36266787÷723=36965059÷731=89327228÷804=407332520÷815=408500112÷828=6071060÷836=85461663÷907=509738990÷918=805444000÷925=980751192÷932=86998209÷901=109647112÷914=70890454÷923=98286110÷935=30629×31=789948×625=30000903×24=21672861×198=17047856×7026=3934568103×17=137751436×2185=9526609051×728=658912849×60357=295749345×18=81032×908=29056741×83=6150326×504=1310484×915=7686036×732=2635251×987=5033748×625=3000092×375=34500604×125=7550037×9264=3427686035×71=42848592×4105=377660368×175=64400702×905=181000810÷18=45684÷19=361071÷17=631296÷27=482716÷28=972784÷29=963552÷37=963230÷38=853627÷39=934042÷47=863600÷48=754606÷49=944959÷57=87

七入法：除数首位是任意数，第二位是7、8、9时，用七入法，即：用除数首位+1与除数的前两位比较判断估商5510÷58=955664÷59=964891÷67=736460÷68=956693÷69=977469÷77=976630÷78=856557÷79=838526÷87=988712÷88=997921÷89=89912÷19=481026÷27=382470÷38=654557÷49=934350÷58=755226÷67=787410÷78=958722÷89=98980÷28=351332÷37=36630÷18=35609÷29=212331÷37=631200÷48=255664÷59=961700÷68=257663÷79=976600÷88=753773÷77=499702÷99=982100÷28=753822÷39=9983848÷47=844002÷58=696624÷69=967644÷78=985162÷58=894653÷47=992850÷38=751701÷27=633783÷39=974560÷48=955605÷59=955092÷67=766708÷78=867921÷89=8914700÷175=8410404÷289=369900÷396=2533327÷483=6953847÷579=9319749÷681=2938160÷795=4822200÷888=2523400÷975=2467816÷692=9812672÷198=6413671÷279=4932340÷385=8413916÷497=2849130÷578=8552050÷694=7553652÷789=6840320÷896=4596726÷987=9873710÷182=40.16119776÷197=608105270÷174=605114111÷279=409201058÷286=70390537÷293=309301500÷375=804232320÷384=605281473÷397=709286839÷471=60936150÷482=75298980÷495=60422347÷573=39528520÷584=905359936÷592=608545790÷678=80566639÷687=97637092÷694=918643734÷786=819727181÷793=917468531÷777=60366600÷888=7598901÷999=99717444÷876=819541728÷891=608608730÷985=618893214÷973=918181300÷196=92113032÷284=398387891÷393=907465392÷472=986720÷15=482100÷25=842275÷35=65

五入+1法，除数首位是任意数，第二位是5时，用五入+1法，即：用除数首位+1，5被除数试商后再+1为确商4365÷45=972640÷55=485070÷65=783600÷75=485100÷75=683145÷85=379310÷95=98688÷16=432522÷26=972700÷36=753818÷46=833640÷56=656468÷66=983420÷76=458256÷86=968544÷96=89962÷26=371020÷15=68752÷16=476000÷25=2401924÷26=743010÷35=862448÷36=683060÷45=683450÷46=754620÷55=844200÷56=753120÷65=486270÷66=955850÷75=787144÷76=945780÷85=685418÷86=639120÷95=967200÷96=7510812÷159=6811544÷156=749880÷152=656006÷154=395846÷158=379513÷151=6311932÷157=767038÷153=4610540÷155=6810200÷150=6810653÷159=6714863÷167=8915390÷162=9512600÷168=754100÷164=2514181÷163=8716224÷169=9610206÷162=6313860÷165=8411753÷161=7313944÷166=84930÷15=62864÷36=24900÷75=12884÷26=34990÷45=229024÷96=946630÷85=78720÷16=455092÷76=671680÷35=481520÷16=952280÷95=245504÷86=642050÷25=826270÷66=951320÷55=243174÷46=69910÷65=14960÷15=645776÷76=765762÷86=676075÷75=81832÷26=322380÷35=687200÷96=757990÷85=94688÷16=433528÷36=983105÷45=672352÷56=425460÷65=845244÷76=697980÷95=844950÷66=752100÷25=84960÷15=641058÷46=232240÷35=645610÷66=851980÷55=361058÷46=232240÷35=645610÷66=851980÷55=36

四舍减1法：除数首位是任意数，第二位是4时，用四舍减一法，即把除数第二位4舍去，用除数首位与被除数的前两位比较判断估商，估商后再（-1）为确商。1992÷24=832312÷34=683300÷44=755184÷54=964672÷64=735792÷84=763572÷94=38600÷24=25600÷24=252142÷34=631800÷24=752210÷34=652772÷44=633226÷54=59.744800÷64=754218÷74=575712÷84=686486÷94=692280÷24=956080÷64=9517739÷243=7331486÷346=9127404÷442=6221333÷547=3953844÷641=8448230÷742=6554080÷845