三年级数学(上)计算题专项练习附答案集锦

三年级数学(上)计算题专项练习附答案集锦460-(316+125)=190-38+829=108+175+263=774+243-272=63+32=48-(439-410)=751-(441-24)=21×(553-550)=256+199-300=99+144-234=489-458-27=534+74+382=285×4=247+(283-159)=125-14×7=460-98×3=32+336+554=459+365+792=358+378×2=315+(296-60)=979+376-447=494-392=168×5-532=429-(631-401)=292-(425-354)=484×(577-570)=948-789=912-(374+145)=933+(817-350)=73+407=521×(29-20)=949+442+766=160×6-55=484-369+116=56×2+161=420+58-386=395+28+193=4/9+2/9=771+995-333=258-137+786=443-(384-257)=210-140=875×5-741=763-316-56=38×(182-179)=887+484+946=782+(313-175)=17+(226-104)=420+416+29=943+64-834=638+153+174=423+443=460-75×2=73-72+157=497×2=450-105+155=542+426-239=229+361×2=334-19×8=506-117+800=776+82×8=638+112×6=774-(295+398)=659+819-222=490-(95+248)=441+18-232=794+729=327-121-26=630-(203+253)=37+(275-148)=852-754=311+338=3/6-1/6=402×2+181=411+(952-938)=690-454-207=447-86×3=568×7-495=295×(675-668)=37×(293-288)=469-240-174=838+146×6=172+82=890-188+454=55×(230-226)=228-23×5=515+(464-88)=416-49×3=481-(325+64)=10+324-107=5/8-2/8=178×(322-319)=985×6=445-213-37=429-(336-335)=773-127=920-919+20=955-39×8=110×4+607=731-(411-247)=444-(268+125)=883×2-997=164+18×2=247×4-250=74×9-273=741-(208+469)=178+(645-611)=537-(219+62)=815-52×2=284×2=278-116=230+97-189=226×4-840=190×(66-63)=703-427-247=148+80=276+142-78=915-825=426-384=394+243-140=639+863+736=360-(346-120)=402-316+365=841-(947-710)=150+(498-377)=432-92-233=900×4=589×8=338+291=963+548+325=486-25-398=786-233=96×(429-423)=689-668+225=76+115=414+254=128+210-201=128×4=78-10-30=39+285+520=270×8-247=801-79-539=590+(258-74)=849+220×2=194+853-31=264+(102-24)=571-149×2=74+301=480-465=375×3=806-(63+208)=233-226+398=164-59=391×2+157=366+307+257=912+977+888=431-(99+189)=965-(634+154)=123+64+486=80+688+49=86×2+373=615-17-276=879+976+125=185×5-400=3/8-2/8=756+157+59=281+70=374+175+366=842+841+958=456+(199-69)=377-137-51=893-50-637=362-44×2=11+102-11=210-50+289=888+415-733=204-44=176+219-50=346-(309-215)=175+(580-491)=106+36=220-23×2=100×4=730-(217+148)=996-202+522=40×4=404-179-188=479-290=4/7+2/7=701×(379-373)=250-(454-408)=647+111+97=324-(68+198)=895+973+617=208+810-852=938+359+309=444-137-178=497-(173-133)=199+126=229-(71+140)=901-104=317×4=212×(220-213)=950-39×8=797+444-213=105×(481-476)=312+239+243=111+211×3=13×9=64×5-10=408+486+70=732+925-471=787-(746+27)=3/6+2/6=499-(16+436)=374+(490-414)=436-215+188=245-(262-164)=489+(309-158)=446+(842-647)=935-(89+347)=280+(243-136)=694-(292+298)=281-259+258=972-(918-459)=320-(194-131)=487-285+134=482-190+140=373+105-29=418-(82+121)=960-468-450=361×2-53=170+98-67=809-85×9=390-(99-89)=297-216+55=129×(563-560)=564-14=429+(493-106)=427-207+331=506-253×2=777-43-522=204+228=60-53+122=321+178=242-99+21=991×5=869×5=42×6=325-(269+21)=92×4-310=779×3=198-78-13=773-(226+104)=92×4+163=15×9=131-(435-360)=494+(139-106)=74×(130-125)=496-(190+98)=463-176×2=755×4=642×9-437=440-90=937-65×6=464-(397-285)=74×(69-65)=671-(382+187)=498-452+31=966+580-793=298-(216+82)=805-(283+488)=302+49×6=478-77×2=356-(264+49)=288+324=581+153+152=193×3=163+297=28×8=183+103×7=65×(573-569)=981-207-685=114-44-17=164×3+353=304-(189-143)=172×8-341=57×(481-473)=329+(997-74)=94-(127-103)=702-(12+678)=384-208+75=66+889-890=602×8-976=147×3-94=435+(268-16)=302×3-752=462×2=112×6-92=14×5=496+190=202+145-300=143×(412-407)=697-365-235=130+(355-280)=382-279+374=165-96+101=159-145+462=305-(36+171)=300+44×6=235-(457-305)=164×4-293=332-42=842-306×2=187+219+149=406-386+222=261-(969-852)=765-26-425=419-74-307=440-289=550+106+740=201+596+144=928-812=968-98-828=837×5=85-61+198=766-(527-436)=59-45=848×7-544=355+903=154+226×4=322-133-167=244+(803-621)=76+48+696=583+349+436=538-93-363=329-150-132=448-220-138=124×5-426=122×(578-570)=283×3-70=125×(123-115)=431+240-605=925-297-345=162+(72-19)=351-69×3=59×2=387+93-424=732+770+355=168+(369-312)=871-680=457+61+447=145-(293-156)=183×4-388=893+971+201=967-269=463-(414+16)=201×8=171+161=335+238+191=130-16×8=312-(196+10)=746-374=499-483=786-(448-45)=750+661+981=634-92=465-75=541+(899-229)=182×(196-192)=545+331=77×9-247=281×3-56=165+12×9=85+28=455+952=990+110-514=489×8-596=699-158×4=311+159=719×(760-754)=164+448=852-233=760×5-194=69×6=663-285×2=842-(90+705)=395×(566-559)=293-95+86=850-449-145=761-(659-102)=360-180+267=447-45×8=235-221=346×3=942+(618-609)=264-13+457=26+533+169=103×7-557=27+304+305=83×4+796=968+88-916=628-196=501×(172-164)=787×4-459=90×2=726×5-748=311-14-17=170+166-142=550×(689-680)=76×(482-477)=216+252-194=264×(185-182)=355+258-330=197+(307-247)=640-(645-385)=104×6+213=354×2-102=170+92×2=168-55+132=579-493=57+183=470-71×3=201×2+104=514×2-55=953-272-474=171+274+426=66+334=349-(110+214)=155+30=364-(572-435)=891-406=97×4-309=108×(259-250)=319-33-62=878+363-439=712+(273-159)=436-(51+381)=202+108-234=106+289=22×(484-480)=4/9-2/9=309+54×3=428-162+103=848-216×2=395+(362-271)=316×3=40×(414-406)=796+365+502=417-15×8=461-20-201=612×8=371-76=3/8+2/8=110×3+404=94×6+129=115+(460-37)=448-104=393×2=223+133+259=261+(388-66)=250+61=396-(337-38)=375×2-480=137×(157-154)=619×2=108×9-557=164+141×5=317+48-297=52×(226-221)=463+110=102+246×4=260×3-665=86+88-160=740+(909-771)=194+370=721+504+468=57+870+56=144-(337-239)=54+(800-468)=974-771+275=88×7=989-105-770=203+30-45=902+25-741=865×(45-37)=174+(443-171)=440+178=302-157+72=413-190-149=753×5=426+(91-65)=644-607+401=216×7-124=194-(511-496)=387+122+276=688-(640-79)=260×2=710+(672-616)=437-54×7=289+10-147=268+18×8=769×(230-225)=154+127+152=201+284×2=494-14×9=423-86-156=149-40×3=156+687=252+186=637+15-608=109+(260-148)=324×(55-52)=404+68=853-47×7=14×7+163=879×(832-825)=211-100=418×4-866=239-(483-466)=467-129×3=33+(538-213)=507-(978-815)=83×(369-360)=367+(350-208)=303-56+248=420-147-177=314-285-15=356-71×3=498+(459-418)=45×3+270=742-363+950=253+565=996-(852-644)=35×8=490-(296-92)=342-(212-117)=589×(991-988)=569×(864-861)=163×6-443=259+663=934+982+733=21×7=512+(780-649)=167+39-125=663×8-740=894-688+904=95-(473-418)=557-50×7=422-(206-158)=124+299=458-44×6=191×8=251+599+161=44+891+22=946-(133+542)=480×7-708=3/8+4/8=346-29×7=562-(37+56)=247+292=950-460-488=596-(255+146)=58+230=40+80-24=948-337=121×(238-232)=639-78×3=66×7+612=468-(291+19)=124×7-144=262-(385-209)=506-63×7=782-563=88×8-466=5/9+3/9=51×4+611=7/9-1/9=110×6-436=183+84-91=252+360-46=271+197-437=310-301+237=140-10×4=372-296+369=903-182+593=70+222=151-13×9=760+299+751=307×2=440-55=778+76-370=968-874-14=58+(427-103)=380-100-45=611+234+71=579-531=902-263×2=617+728-688=33+121×2=748-266=4/10+5/10=482-413=272-114×2=3/5-1/5=620-(65+432)=160×3+131=73-(213-185)=856-117+605=427+371+410=1/4+2/4=315×2+761=49+53×7=496×8=159+(819-220)=96+275×2=959-270=735-37×7=51+175-127=142×7-756=929-266=580-23×3=127+226×2=244-89×2=4/6-2/6=591+(333-145)=424-(181+131)=140×4=993-(870-812)=10+439-202=256-(49+145)=106×5=589-(426-180)=723-(472+103)=531×5-837=348-48=97×5+98=794-(76+216)=73-35=305+20×8=4/7-1/7=137+332=358-(898-652)=374-(119+86)=322×2=179+(922-43)=483-156×3=261×6-826=47×(254-249)=590-366=597+667=108×8-88=855×(146-143)=390+17+166=526×5=857-30-230=315-65=20×7=545+(355-304)=389×4-501=491-(157+74)=958+260-885=987-657+767=101+89×4=222+42=457-(134+203)=333+98=159×3+193=135+801+316=662-29-432=878×(232-223)=978-(711+79)=82×(88-80)=848-(66+704)=542-10-178=939-499+856=33×7-70=45+222=978-839+346=63+13=483×7=100+267+238=512×(745-736)=123×3-106=361-(223-217)=378-79=464×5=82×(143-140)=226-149=493-194+154=633-63+827=806-169+741=195+170×4=29×3=232+184-344=421-(21+40)=258-(29+121)=318-(483-285)=105×(305-302)=6/7-1/7=244-44×5=91×7+320=29+447-426=377-64×3=189-63×2=85+128=866-(702+62)=70×(261-252)=81×6=117×(150-145)=844-(84+166)=74×5+149=85+323-278=3/7-1/7=22×(693-688)=398+72+187=298-267=58+344-39=907-45+112=335+80=905×5=257-31×8=553+(791-760)=448+52-425=378-295=472-206+231=804-(259+329)=376-(166+155)=457-262-110=701-(451-146)=272×2+379=992-914=203-(159-44)=879-317×2=211-151=661×4=375-303=748-58×3=916+524=818×(98-93)=786-10=802-574+430=377-285+90=286+885+904=687+58+146=476-43+56=185+306=135-133+67=8/10-2/10=145+262=398+695-977=350-46+183=103×7-440=474-(69+400)=399-(763-683)=2/6+3/6=39×2+640=959×7=446-30×9=105-(329-248)=278+(489-383)=64×6=908+(636-392)=217×3+252=425-296=453-102-268=89×5=845-265+541=166×6=730-(725-641)=462+(932-284)=149×7-624=498-(392-365)=350-249=926-(647-550)=294-70-16=369+740+619=380-150-186=966-176-598=445-53×6=720-(442-51)=307×3-103=450-300+219=99+(202-157)=268×3-654=23×6=71×6+331=424-75-322=597+(843-179)=576×8-290=283-167-54=121×(56-51)=99×5+321=470-(29+387)=1/3+2/3=461-168+416=393-178×2=156+315=96+(405-104)=644×(747-741)=352+344+18=655+(273-272)=379-(63+76)=636-230=1/6+5/6=34×5+916=659-190×2=2/6-1/6=299-(388-166)=214×6=334-(421-408)=429-174-61=808×7-527=759-(168+307)=107×8+785=638×6=391-98-271=460+(418-293)=218+(201-15)=472+821=783-240+160=293-(963-767)=741-12-669=369-14×4=960-(111+534)=402+26×7=852×2-328=500-87-166=500+134+73=35-16×2=279+(485-177)=480+480-670=514-298-28=114+334=396-177-66=545-(329-322)=161×(347-341)=808-588=755+12×5=379-157×2=101+206-256=106×6=255-20×9=261-(442-254)=273+120×5=499+300=380+(842-767)=528×(564-557)=298-(79+196)=717×(920-912)=100×5-364=53+139=785×(823-818)=212×3=711-(575-353)=367-132=43×(283-275)=293-77-130=155+74×9=204×(406-402)=190+80=2/7+4/7=101×4+230=270-45=参考答案460-(316+125)=19190-38+829=981108+175+263=546774+243-272=74563+32=9548-(439-410)=19751-(441-24)=33421×(553-550)=63256+199-300=15599+144-234=9489-458-27=4534+74+382=990285×4=1140247+(283-159)=371125-14×7=27460-98×3=16632+336+554=922459+365+792=1616358+378×2=1114315+(296-60)=551979+376-447=908494-392=102168×5-532=308429-(631-401)=199292-(425-354)=221484×(577-570)=3388948-789=159912-(374+145)=393933+(817-350)=140073+407=480521×(29-20)=4689949+442+766=2157160×6-55=905484-369+116=23156×2+161=273420+58-386=92395+28+193=6164/9+2/9=6/9771+995-333=1433258-137+786=907443-(384-257)=316210-140=70875×5-741=3634763-316-56=39138×(182-179)=114887+484+946=2317782+(313-175)=92017+(226-104)=139420+416+29=865943+64-834=173638+153+174=965423+443=866460-75×2=31073-72+157=158497×2=994450-105+155=500542+426-239=729229+361×2=951334-19×8=182506-117+800=1189776+82×8=1432638+112×6=1310774-(295+398)=81659+819-222=1256490-(95+248)=147441+18-232=227794+729=1523327-121-26=180630-(203+253)=17437+(275-148)=164852-754=98311+338=6493/6-1/6=2/6402×2+181=985411+(952-938)=425690-454-207=29447-86×3=189568×7-495=3481295×(675-668)=206537×(293-288)=185469-240-174=55838+146×6=1714172+82=254890-188+454=115655×(230-226)=220228-23×5=113515+(464-88)=891416-49×3=269481-(325+64)=9210+324-107=2275/8-2/8=3/8178×(322-319)=534985×6=5910445-213-37=195429-(336-335)=428773-127=646920-919+20=21955-39×8=643110×4+607=1047731-(411-247)=567444-(268+125)=51883×2-997=769164+18×2=200247×4-250=73874×9-273=393741-(208+469)=64178+(645-611)=212537-(219+62)=256815-52×2=711284×2=568278-116=162230+97-189=138226×4-840=64190×(66-63)=570703-427-247=29148+80=228276+142-78=340915-825=90426-384=42394+243-140=497639+863+736=2238360-(346-120)=134402-316+365=451841-(947-710)=604150+(498-377)=271432-92-233=107900×4=3600589×8=4712338+291=629963+548+325=1836486-25-398=63786-233=55396×(429-423)=576689-668+225=24676+115=191414+254=668128+210-201=137128×4=51278-10-30=3839+285+520=844270×8-247=1913801-79-539=183590+(258-74)=774849+220×2=1289194+853-31=1016264+(102-24)=342571-149×2=27374+301=375480-465=15375×3=1125806-(63+208)=535233-226+398=405164-59=105391×2+157=939366+307+257=930912+977+888=2777431-(99+189)=143965-(634+154)=177123+64+486=67380+688+49=81786×2+373=545615-17-276=322879+976+125=1980185×5-400=5253/8-2/8=1/8756+157+59=972281+70=351374+175+366=915842+841+958=2641456+(199-69)=586377-137-51=189893-50-637=206362-44×2=27411+102-11=102210-50+289=449888+415-733=570204-44=160176+219-50=345346-(309-215)=252175+(580-491)=264106+36=142220-23×2=174100×4=400730-(217+148)=365996-202+522=131640×4=160404-179-188=37479-290=1894/7+2/7=6/7701×(379-373)=4206250-(454-408)=204647+111+97=855324-(68+198)=58895+973+617=2485208+810-852=166938+359+309=1606444-137-178=129497-(173-133)=457199+126=325229-(71+140)=18901-104=797317×4=1268212×(220-213)=1484950-39×8=638797+444-213=1028105×(481-476)=525312+239+243=794111+211×3=74413×9=11764×5-10=310408+486+70=964732+925-471=1186787-(746+27)=143/6+2/6=5/6499-(16+436)=47374+(490-414)=450436-215+188=409245-(262-164)=147489+(309-158)=640446+(842-647)=641935-(89+347)=499280+(243-136)=387694-(292+298)=104281-259+258=280972-(918-459)=513320-(194-131)=257487-285+134=336482-190+140=432373+105-29=449418-(82+121)=215960-468-450=42361×2-53=669170+98-67=201809-85×9=44390-(99-89)=380297-216+55=136129×(563-560)=387564-14=550429+(493-106)=816427-207+331=551506-253×2=0777-43-522=212204+228=43260-53+122=129321+178=499242-99+21=164991×5=4955869×5=434542×6=252325-(269+21)=3592×4-310=58779×3=2337198-78-13=107773-(226+104)=44392×4+163=53115×9=135131-(435-360)=56494+(139-106)=52774×(130-125)=370496-(190+98)=208463-176×2=111755×4=3020642×9-437=5341440-90=350937-65×6=547464-(397-285)=35274×(69-65)=296671-(382+187)=102498-452+31=77966+580-793=753298-(216+82)=0805-(283+488)=34302+49×6=596478-77×2=324356-(264+49)=43288+324=612581+153+152=886193×3=579163+297=46028×8=224183+103×7=90465×(573-569)=260981-207-685=89114-44-17=53164×3+353=845304-(189-143)=258172×8-341=103557×(481-473)=456329+(997-74)=125294-(127-103)=70702-(12+678)=12384-208+75=25166+889-890=65602×8-976=3840147×3-94=347435+(268-16)=687302×3-752=154462×2=924112×6-92=58014×5=70496+190=686202+145-300=47143×(412-407)=715697-365-235=97130+(355-280)=205382-279+374=477165-96+101=170159-145+462=476305-(36+171)=98300+44×6=564235-(457-305)=83164×4-293=363332-42=290842-306×2=230187+219+149=555406-386+222=242261-(969-852)=144765-26-425=314419-74-307=38440-289=151550+106+740=1396201+596+144=941928-812=116968-98-828=42837×5=418585-61+198=222766-(527-436)=67559-45=14848×7-544=5392355+903=1258154+226×4=1058322-133-167=22244+(803-621)=42676+48+696=820583+349+436=1368538-93-363=82329-150-132=47448-220-138=90124×5-426=194122×(578-570)=976283×3-70=779125×(123-115)=1000431+240-605=66925-297-345=283162+(72-19)=215351-69×3=14459×2=118387+93-424=56732+770+355=1857168+(369-312)=225871-680=191457+61+447=965145-(293-156)=8183×4-388=344893+971+201=2065967-269=698463-(414+16)=33201×8=1608171+161=332335+238+191=764130-16×8=2312-(196+10)=106746-374=372499-483=16786-(448-45)=383750+661+981=2392634-92=542465-75=390541+(899-229)=1211182×(196-192)=728545+331=87677×9-247=446281×3-56=787165+12×9=27385+28=113455+952=1407990+110-514=586489×8-596=3316699-158×4=67311+159=470719×(760-754)=4314164+448=612852-233=619760×5-194=360669×6=414663-285×2=93842-(90+705)=47395×(566-559)=2765293-95+86=284850-449-145=256761-(659-102)=204360-180+267=447447-45×8=87235-221=14346×3=1038942+(618-609)=951264-13+457=70826+533+169=728103×7-557=16427+304+305=63683×4+796=1128968+88-916=140628-196=432501×(172-164)=4008787×4-459=268990×2=180726×5-748=2882311-14-17=280170+166-142=194550×(689-680)=495076×(482-477)=380216+252-194=274264×(185-182)=792355+258-330=283197+(307-247)=257640-(645-385)=380104×6+213=837354×2-102=606170+92×2=354168-55+132=245579-493=8657+183=240470-71×3=257201×2+104=506514×2-55=973953-272-474=207171+274+426=87166+334=400349-(110+214)=25155+30=185364-(572-435)=227891-406=48597×4-309=79108×(259-250)=972319-33-62=224878+363-439=802712+(273-159)=826436-(51+381)=4202+108-234=76106+289=39522×(484-480)=884/9-2/9=2/9309+54×3=471428-162+103=369848-216×2=416395+(362-271)=486316×3=94840×(414-406)=320796+365+502=1663417-15×8=297461-20-201=240612×8=4896371-76=2953/8+2/8=5/8110×3+404=73494×6+129=693115+(460-37)=538448-104=344393×2=786223+133+259=615261+(388-66)=583250+61=311396-(337-38)=97375×2-480=270137×(157-154)=411619×2=1238108×9-557=415164+141×5=869317+48-297=6852×(226-221)=260463+110=573102+246×4=1086260×3-665=11586+88-160=14740+(909-771)=878194+370=564721+504+468=169357+870+56=983144-(337-239)=4654+(800-468)=386974-771+275=47888×7=616989-105-770=114203+30-45=188902+25-741=186865×(45-37)=6920174+(443-171)=446440+178=618302-157+72=217413-190-149=74753×5=3765426+(91-65)=452644-607+401=438216×7-124=1388194-(511-496)=179387+122+276=785688-(640-79)=127260×2=520710+(672-616)=766437-54×7=59289+10-147=152268+18×8=412769×(230-225)=3845154+127+152=433201+284×2=769494-14×9=368423-86-156=181149-40×3=29156+687=843252+186=438637+15-608=44109+(260-148)=221324×(55-52)=972404+68=472853-47×7=52414×7+163=261879×(832-825)=6153211-100=111418×4-866=806239-(483-466)=222467-129×3=8033+(538-213)=358507-(978-815)=34483×(369-360)=747367+(350-208)=509303-56+248=495420-147-177=96314-285-15=14356-71×3=143498+(459-418)=53945×3+270=405742-363+950=1329253+565=818996-(852-644)=78835×8=280490-(296-92)=286342-(212-117)=247589×(991-988)=1767569×(864-861)=1707163×6-443=535259+663=922934+982+733=264921×7=147512+(780-649)=643167+39-125=81663×8-740=4564894-688+904=111095-(473-418)=40557-50×7=207422-(206-158)=374124+299=423458-44×6=194191×8=1528251+599+161=101144+891+22=957946-(133+542)=271480×7-708=26523/8+4/8=7/8346-29×7=143562-(37+56)=469247+292=539950-460-488=2596-(255+146)=19558+230=28840+80-24=96948-337=611121×(238-232)=726639-78×3=40566×7+612=1074468-(291+19)=158124×7-144=724262-(385-209)=86506-63×7=65782-563=21988×8-466=2385/9+3/9=8/951×4+611=8157/9-1/9=6/9110×6-436=224183+84-91=176252+360-46=566271+197-437=31310-301+237=246140-10×4=100372-296+369=445903-182+593=131470+222=292151-13×9=34760+299+751=1810307×2=614440-55=385778+76-370=484968-874-14=8058+(427-103)=382380-100-45=235611+234+71=916579-531=48902-263×2=376617+728-688=65733+121×2=275748-266=4824/10+5/10=9/10482-413=69272-114×2=443/5-1/5=2/5620-(65+432)=123160×3+131=61173-(213-185)=45856-117+605=1344427+371+410=12081/4+2/4=3/4315×2+761=139149+53×7=420496×8=3968159+(819-220)=75896+275×2=646959-270=689735-37×7=47651+175-127=99142×7-756=238929-266=663580-23×3=511127+226×2=579244-89×2=664/6-2/6=2/6591+(333-145)=779424-(181+131)=112140×4=560993-(870-812)=93510+439-202=247256-(49+145)=62106×5=530589-(426-180)=343723-(472+103)=148531×5-837=1818348-48=30097×5+98=583794-(76+216)=50273-35=38305+20×8=4654/7-1/7=3/7137+332=469358-(898-652)=112374-(119+86)=169322×2=644179+(922-43)=1058483-156×3=15261×6-826=74047×(254-249)=235590-366=224597+667=1264108×8-88=776855×(146-143)=2565390+17+166=573526×5=2630857-30-230=597315-65=25020×7=140545+(355-304)=596389×4-501=1055491-(157+74)=260958+260-885=333987-657+767=1097101+89×4=457222+42=264457-(134+203)=120333+98=431159×3+193=670135+801+316=1252662-29-432=201878×(232-223)=7902978-(711+79)=18882×(88-80)=656848-(66+704)=78542-10-178=354939-499+856=129633×7-70=16145+222=267978-839+346=48563+13=76483×7=3381100+267+238=605512×(745-736)=4608123×3-106=263361-(223-217)=355378-79=299464×5=232082×(143-140)=246226-149=77493-194+154=453633-63+827=1397806-169+741=1378195+170×4=87529×3=87232+184-344=72421-(21+40)=360258-(29+121)=108318-(483-285)=120105×(305-302)=3156/7-1/7=5/7244-44×5=2491×7+320=95729+447-426=50377-64×3=185189-63×2=6385+128=213866-(702+62)=10270×(261-252)=63081×6=486117×(1