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785×8=891-887+295=564-138-31=3/7+2/7=36×(248-240)=2/5+3/5=238-175+717=799+662-565=141+273+649=19×9=269+73=140+504=133×(348-343)=383-(153+227)=338-(235+21)=232+377+109=820-537+745=996-137×5=6/8-1/8=953-(74+527)=484-146=992×5=349-22=853-567+577=265+171+18=198+728+847=546-59×3=240+(333-68)=218+59=75×6=115+113=145+(354-146)=68×(57-48)=823+(697-499)=359-(132+200)=65-(24+13)=611+624-990=280-(166-63)=617+867=113+301=479-(71+285)=541+919-947=94×2+601=189-(192-63)=396×2-582=18×(911-905)=591-235+342=604+(844-257)=477-(159+257)=277×(107-100)=304+64×2=363+41×2=794-10-561=22×9=123+336=150-48+160=525+700=249×(382-378)=983-901=786+826-839=872+282=749-(121+150)=430×7=291+415+78=149+330-57=147+(309-207)=752-713=355×2+888=329-52×2=189+(496-486)=238+490-59=929+(112-63)=3/8-2/8=61×2+383=723×6-464=411+135+182=56+599+69=941-110-181=281+90-56=411-311=125×5=251-153=369+78=755+293-915=281×2-43=478-169-275=603-141×2=25×(309-301)=439-61×3=913-317-287=328×(141-133)=46×2+209=624-81×2=95+143-211=924-337+863=282+149=120×7=839×8-367=167-157+180=372+435+164=250+537=691+(733-153)=433-243-80=667+388-674=700-(240+357)=75×5+171=116+290+511=4/7-2/7=233×(516-507)=14×3+178=95+155×2=507+(641-288)=671-457=328+466+113=350+(400-272)=268×3=203+120-208=69+188-137=946-92-366=872-(379+368)=173×8-512=4/8-3/8=433-301=104-75+392=369×(434-430)=523-133+892=60×(368-362)=460-(398-209)=135+(383-200)=80+312-256=130×3-123=170-56×3=411-161×2=355×3-974=530-87×4=101+18=117×2+468=228+243=84×2=340-157+549=32×9+889=356×4=375+91+729=760×9-678=456-(184+108)=95×8-55=270-31×6=251×8-915=120×4=64+229=216+226-159=244+60=546-436=490-319=336-295-23=347-66×2=492+42×3=697-127=405+27+68=147×(905-897)=863+84×3=410-(330-85)=106+391-200=237×2=448+(239-71)=553+(873-90)=473-(449-336)=459-32×7=62×(80-71)=412-175+15=954+536+708=6/7-1/7=557+148-139=70×(46-40)=313+101-268=160×2+440=837-10×8=596-(363+154)=475-73-343=484-273-89=769-(557+157)=206+643+66=404-94+28=300×3+46=53×7+412=111-34-29=489-(138+106)=349+(457-107)=426+10×2=2/4-1/4=225-13×6=37+107+150=300+127-78=639+864-942=907×3-181=458-374+178=920-71×9=438+26+287=3/9-1/9=166-(450-291)=265+129+229=521-70-56=702×5=822-717=944+(938-215)=583+23×6=286×9=136+177+202=458+72×2=60×9-404=452+496-607=105+61=812-388=254-42×2=288×2=432-(26+125)=709×2-827=828+197+580=496-124-341=338+749+262=58+392-49=105×(402-398)=798-258+738=362+89-253=392-(828-478)=36×(288-285)=575-63×8=228-(412-375)=313+349+88=548×(859-853)=97-53+214=180×5-397=769-122-322=236×(305-302)=29×(478-473)=74×(257-249)=472+106+966=450-325+253=329-(73+137)=324×(791-786)=474-(442-391)=428+(493-290)=289-127×2=334-131=5/8+3/8=466×2-436=863-199-331=289-66=914-174+463=465+209×2=438-(275-45)=887×4-218=366-50+107=746+712-31=48×8-164=335-23+170=942-440-39=390-(180+37)=389+159+29=911-565-37=1/5+2/5=644×(550-546)=431×(545-539)=752-537-192=93×6-411=604+208+174=787×3-901=930-(560-112)=183+116×3=643-91×5=559+294+128=462-(914-843)=220×(455-450)=49×9-226=288-65+36=272-29=237+145=203-179+136=654-571=496+(349-196)=571+905=610-(859-699)=453×4-613=663-598+628=966-127×5=194+26×3=200+203+840=321-48-222=184×4-207=525×2=159×(480-477)=514-(338-238)=669-(772-290)=985×(268-262)=76×8-517=363+(416-103)=375-273=359+183+430=805-(339-262)=87+973+544=397+16-326=239×3+323=728×2-287=493-324=455-193-223=658+637-36=966+(894-153)=230×(366-359)=911-(266+17)=802+119-488=807+35×6=903-495=8/10+2/10=17×2+307=914-88-484=112-13×8=248×2=47+912+686=354×2=917+90×6=952+535-487=481-(145+11)=33×(278-274)=72+(344-296)=146-31-14=161+(460-295)=53×9=405-(299-184)=867-(658-411)=755-90×4=986-236×2=228-54=735-128=255+67=729-(528+140)=783-447=710-70-135=424-33-158=289-53-206=498-(29+252)=547×6=469-45×2=308+(306-120)=494-156+86=10×(295-290)=400-316-27=214×3=218×7-551=46×6+182=453-(66+368)=80+394=260+(444-402)=390-(16+285)=65+(455-435)=333+919=275-(338-239)=275-(59+204)=749-(779-351)=788+(881-747)=914×5=448-105=439-337+56=24×3+314=261-(207-10)=404+341=463-(399+63)=350-76+31=489-140=233+373+270=149×4=407-129+329=395×(238-231)=84×8-417=321-(809-758)=254-135-42=372+(48-47)=112×7-538=119+219+490=222-(25+29)=211-(367-359)=406+(492-197)=975-72=68×2=93+260×3=796×8-143=133+324=496-297-131=373-(135+222)=821-(598-309)=500-156-265=5/8-2/8=399×2-692=950-90-264=251×(186-183)=758×6-456=144×4=975-807+748=946-227+555=440+70×2=714-36×8=117-79=428-108-104=398+(402-351)=33×8-61=223×5=783+91-791=905-145×4=566+300+61=418×5=303-113-25=660+741+182=1/8+4/8=840-387-328=725+95+141=705-(384+71)=197+289-203=77×7+583=3/10+5/10=725-511=624-(683-365)=947-745+308=3/5-1/5=450-14×5=41-(221-198)=410-59+118=998-104×7=103+227+52=273+73=170-83+188=388×4=124+85+117=930+423=1/6+4/6=672-391=594+(902-259)=595+134-71=150×5-737=250×2+321=486+(218-70)=468-455+430=142+(339-35)=367+92=140×7+860=387-314=801-733=893-634+341=605-(511-288)=818-409-398=868×2-781=35+131+526=968-76×5=117×3-108=356-59×4=700×(677-671)=482-448=953-130×5=769-578+644=26+78=296-(47+220)=842-432+256=628×6-904=776+219-162=100+(326-127)=85×6=203+125+185=449-142-106=258-169=999-(938+44)=362+847+563=124+343-390=29×(123-116)=795+451-907=55-12-12=459×2-348=359+260+339=804-171-424=649+779-961=345×(946-940)=450×2=219×2=372-12×3=486+(188-157)=96+158×4=26×2+113=608+913-976=289-(418-402)=735-241×3=443-314-30=475-11=291+226=1/4+2/4=911-(485+270)=938-148-344=89+204-230=336-(118-87)=62×(312-308)=397+71=434×2+199=676-(913-559)=210+66-40=237-13×4=968-14=630+897-383=3/5-2/5=169+70=987-453+244=256-180=855-(93+691)=433-46=119+268×2=654-213×2=417-365=73×(447-441)=951×(992-984)=10×3+244=732-(139+225)=529×3-460=116-(47+30)=496-372-119=841-(739-688)=234+454=446+(165-68)=278-(299-190)=662-(325+300)=195×4-616=782×7=204×2=769-(662-190)=932-(262-118)=2/6-1/6=330-(324-312)=418+(378-242)=227×5=205×5=207+(865-641)=548×7-151=359-145+177=320-121-97=567-(935-618)=141+(471-240)=365×2=34×(161-156)=266-239=54×8=290×3-727=403-377=204+260-31=495-(38+65)=84×3+25=175-54=358-273+91=487-145=288+117×3=346-57=397-381+80=388+76=445+41+456=244-78×2=272-14=208-45×3=218+256=48×8+452=315×3-601=438-(478-125)=85+(678-309)=210+(359-243)=317-(664-602)=583-(434+22)=329-34×2=992-(590+122)=390×(975-966)=889+885=83×9-659=367+975-607=168-54-105=350-26=328-270+192=82+(619-518)=375×6=837-629-202=316+130-365=963-(556-293)=572-379+84=272×2+441=638+797+816=132+671+580=285-(350-145)=753-542=966-62-320=899-(987-695)=229×2+893=167+305-402=247×4-939=823-221×2=10×9=288+214×3=785+339-338=492-348-103=112+529=178+40=103+115-206=877-(450+239)=481+90=575×8-248=90-28+298=127+(185-39)=417-29×5=465-(274+26)=313-21-21=210-(284-185)=439-38+90=5/9+4/9=426×4-932=60+229-195=208+406+122=130+(422-271)=938-203×3=785-708+71=313-120=157×(718-714)=735-(452+128)=713+822-754=450-36-102=126+192=953-249-439=923-90+546=375-(204+86)=352-(222+122)=442-259+441=503-(26+329)=97×8=676-(128+274)=188×(485-480)=628×(732-725)=108+191×4=612-36=78+(855-43)=323+150-400=728-203-345=451+316×3=268+133+459=311+907-833=481-(67-52)=1/7+2/7=162-23×3=279-(125+135)=127×2=913-(389+442)=713-45-425=261-18×9=393-64×6=890-16-472=104×7=141×(333-330)=507+109=192×4=976+705+428=209+238-254=338-337+304=814-89-591=993+981=491-(459-277)=359-209-35=233-120=362+(371-139)=856-(76+740)=462+(315-307)=714-(619-106)=155+36=436-156×2=196-18×3=319-241+376=718+(413-358)=899-866+450=485+206-49=93×2+557=456+213=341-(65+132)=826-790+794=282×(379-376)=178+264=117-10×2=96×5-191=312×2-406=422+(316-87)=615-(397+198)=608×(617-612)=233-61+109=16+85=901-119×5=777×6-348=198+211+183=168×4-386=292-17+24=762+975-235=932-11=72+324=799+815=110-12×6=330-311+14=319×3+463=44×4=68×8+125=337+573=749-(579-411)=347-112-222=610-174-77=645-78=453-263=168-(151-118)=888-(338+94)=231×2-232=494-59=42×3+307=227+196=750+166×4=228-(301-226)=972-54×5=360+435×2=575×5-253=411+(299-152)=762-(712-387)=573×(72-65)=230×4-362=326×(869-863)=243+237+193=138-(485-410)=92×7=938-(135+573)=152+(373-169)=114×4=762+265+626=239+50×4=500-166=790-(39+76)=653-(302-215)=152+834-480=113+94+336=200×(166-161)=70+241=845×(394-391)=37×4=320-44×7=179+131=271-(81+99)=1/7+3/7=34×4+125=893+(828-90)=265-65×2=121×(246-241)=422-248-150=158+233=48+73=670+(872-19)=158×8=249+801+452=126×(538-532)=315×3-80=246-(385-345)=577+960=576×3=402+976=424-89-250=633-(948-391)=134+204+559=211-34×6=4/6-1/6=129-10×9=457-300=485-(543-366)=497+(507-94)=93×(444-439)=98-(378-303)=419-(323+93)=448×5-18=874-731-136=396-257=396-250=76+(296-187)=304-119+118=779×2=127+15×7=146×5=155+311=642×(493-484)=487×5=780+(717-463)=684×2-540=670+754+205=403-(62+260)=310+(129-84)=864-114=928-(239+261)=310-87×3=247×4-18=556×5=828+(270-146)=247×4=477-281+181=983+801-945=350-30×3=100×2=927+269×3=968+152-220=173+304×2=120×(432-424)=186+126-118=460-187-117=50×2=434×(245-237)=462-28×6=266+88×6=499-(28+334)=842+682+561=363-(427-75)=224+241-426=272+320+281=68+174=176×7-100=618×6-162=366-(153+47)=210+(272-223)=319-10×6=424+109×9=113+(787-458)=642+407+62=11×(433-426)=55-(284-266)=409-282+128=632+(847-579)=565+115=92+396-189=14+242×3=483-425=38×6-206=440-189-11=204+128-66=327-(900-857)=107+272=55×(321-318)=67+706+967=270-186=84×8-613=55×(411-407)=144+(228-50)=236+116-29=92+781+126=243-231+114=180+252-361=813×(404-397)=316+677+460=308-17×3=48×4=956-201+249=947-(262+320)=192-(210-202)=980-32×7=353-(260-86)=446+725+15=602+400=933×3=320×(453-446)=880-525+307=889×9=参考答案785×8=6280891-887+295=299564-138-31=3953/7+2/7=5/736×(248-240)=2882/5+3/5=1238-175+717=780799+662-565=896141+273+649=106319×9=171269+73=342140+504=644133×(348-343)=665383-(153+227)=3338-(235+21)=82232+377+109=718820-537+745=1028996-137×5=3116/8-1/8=5/8953-(74+527)=352484-146=338992×5=4960349-22=327853-567+577=863265+171+18=454198+728+847=1773546-59×3=369240+(333-68)=505218+59=27775×6=450115+113=228145+(354-146)=35368×(57-48)=612823+(697-499)=1021359-(132+200)=2765-(24+13)=28611+624-990=245280-(166-63)=177617+867=1484113+301=414479-(71+285)=123541+919-947=51394×2+601=789189-(192-63)=60396×2-582=21018×(911-905)=108591-235+342=698604+(844-257)=1191477-(159+257)=61277×(107-100)=1939304+64×2=432363+41×2=445794-10-561=22322×9=198123+336=459150-48+160=262525+700=1225249×(382-378)=996983-901=82786+826-839=773872+282=1154749-(121+150)=478430×7=3010291+415+78=784149+330-57=422147+(309-207)=249752-713=39355×2+888=1598329-52×2=225189+(496-486)=199238+490-59=669929+(112-63)=9783/8-2/8=1/861×2+383=505723×6-464=3874411+135+182=72856+599+69=724941-110-181=650281+90-56=315411-311=100125×5=625251-153=98369+78=447755+293-915=133281×2-43=519478-169-275=34603-141×2=32125×(309-301)=200439-61×3=256913-317-287=309328×(141-133)=262446×2+209=301624-81×2=46295+143-211=27924-337+863=1450282+149=431120×7=840839×8-367=6345167-157+180=190372+435+164=971250+537=787691+(733-153)=1271433-243-80=110667+388-674=381700-(240+357)=10375×5+171=546116+290+511=9174/7-2/7=2/7233×(516-507)=209714×3+178=22095+155×2=405507+(641-288)=860671-457=214328+466+113=907350+(400-272)=478268×3=804203+120-208=11569+188-137=120946-92-366=488872-(379+368)=125173×8-512=8724/8-3/8=1/8433-301=132104-75+392=421369×(434-430)=1476523-133+892=128260×(368-362)=360460-(398-209)=271135+(383-200)=31880+312-256=136130×3-123=267170-56×3=2411-161×2=89355×3-974=91530-87×4=182101+18=119117×2+468=702228+243=47184×2=168340-157+549=73232×9+889=1177356×4=1424375+91+729=1195760×9-678=6162456-(184+108)=16495×8-55=705270-31×6=84251×8-915=1093120×4=48064+229=293216+226-159=283244+60=304546-436=110490-319=171336-295-23=18347-66×2=215492+42×3=618697-127=570405+27+68=500147×(905-897)=1176863+84×3=1115410-(330-85)=165106+391-200=297237×2=474448+(239-71)=616553+(873-90)=1336473-(449-336)=360459-32×7=23562×(80-71)=558412-175+15=252954+536+708=21986/7-1/7=5/7557+148-139=56670×(46-40)=420313+101-268=146160×2+440=760837-10×8=757596-(363+154)=79475-73-343=59484-273-89=122769-(557+157)=55206+643+66=915404-94+28=338300×3+46=94653×7+412=783111-34-29=48489-(138+106)=245349+(457-107)=699426+10×2=4462/4-1/4=1/4225-13×6=14737+107+150=294300+127-78=349639+864-942=561907×3-181=2540458-374+178=262920-71×9=281438+26+287=7513/9-1/9=2/9166-(450-291)=7265+129+229=623521-70-56=395702×5=3510822-717=105944+(938-215)=1667583+23×6=721286×9=2574136+177+202=515458+72×2=60260×9-404=136452+496-607=341105+61=166812-388=424254-42×2=170288×2=576432-(26+125)=281709×2-827=591828+197+580=1605496-124-341=31338+749+262=134958+392-49=401105×(402-398)=420798-258+738=1278362+89-253=198392-(828-478)=4236×(288-285)=108575-63×8=71228-(412-375)=191313+349+88=750548×(859-853)=328897-53+214=258180×5-397=503769-122-322=325236×(305-302)=70829×(478-473)=14574×(257-249)=592472+106+966=1544450-325+253=378329-(73+137)=119324×(791-786)=1620474-(442-391)=423428+(493-290)=631289-127×2=35334-131=2035/8+3/8=1466×2-436=496863-199-331=333289-66=223914-174+463=1203465+209×2=883438-(275-45)=208887×4-218=3330366-50+107=423746+712-31=142748×8-164=220335-23+170=482942-440-39=463390-(180+37)=173389+159+29=577911-565-37=3091/5+2/5=3/5644×(550-546)=2576431×(545-539)=2586752-537-192=2393×6-411=147604+208+174=986787×3-901=1460930-(560-112)=482183+116×3=531643-91×5=188559+294+128=981462-(914-843)=391220×(455-450)=110049×9-226=215288-65+36=259272-29=243237+145=382203-179+136=160654-571=83496+(349-196)=649571+905=1476610-(859-699)=450453×4-613=1199663-598+628=693966-127×5=331194+26×3=272200+203+840=1243321-48-222=51184×4-207=529525×2=1050159×(480-477)=477514-(338-238)=414669-(772-290)=187985×(268-262)=591076×8-517=91363+(416-103)=676375-273=102359+183+430=972805-(339-262)=72887+973+544=1604397+16-326=87239×3+323=1040728×2-287=1169493-324=169455-193-223=39658+637-36=1259966+(894-153)=1707230×(366-359)=1610911-(266+17)=628802+119-488=433807+35×6=1017903-495=4088/10+2/10=117×2+307=341914-88-484=342112-13×8=8248×2=49647+912+686=1645354×2=708917+90×6=1457952+535-487=1000481-(145+11)=32533×(278-274)=13272+(344-296)=120146-31-14=101161+(460-295)=32653×9=477405-(299-184)=290867-(658-411)=620755-90×4=395986-236×2=514228-54=174735-128=607255+67=322729-(528+140)=61783-447=336710-70-135=505424-33-158=233289-53-206=30498-(29+252)=217547×6=3282469-45×2=379308+(306-120)=494494-156+86=42410×(295-290)=50400-316-27=57214×3=642218×7-551=97546×6+182=458453-(66+368)=1980+394=474260+(444-402)=302390-(16+285)=8965+(455-435)=85333+919=1252275-(338-239)=176275-(59+204)=12749-(779-351)=321788+(881-747)=922914×5=4570448-105=343439-337+56=15824×3+314=386261-(207-10)=64404+341=745463-(399+63)=1350-76+31=305489-140=349233+373+270=876149×4=596407-129+329=607395×(238-231)=276584×8-417=255321-(809-758)=270254-135-42=77372+(48-47)=373112×7-538=246119+219+490=828222-(25+29)=168211-(367-359)=203406+(492-197)=701975-72=90368×2=13693+260×3=873796×8-143=6225133+324=457496-297-131=68373-(135+222)=16821-(598-309)=532500-156-265=795/8-2/8=3/8399×2-692=106950-90-264=596251×(186-183)=753758×6-456=4092144×4=576975-807+748=916946-227+555=1274440+70×2=580714-36×8=426117-79=38428-108-104=216398+(402-351)=44933×8-61=203223×5=1115783+91-791=83905-145×4=325566+300+61=927418×5=2090303-113-25=165660+741+182=15831/8+4/8=5/8840-387-328=125725+95+141=961705-(384+71)=250197+289-203=28377×7+583=11223/10+5/10=8/10725-511=214624-(683-365)=306947-745+308=5103/5-1/5=2/5450-14×5=38041-(221-198)=18410-59+118=469998-104×7=270103+227+52=382273+73=346170-83+188=275388×4=1552124+85+117=326930+423=13531/6+4/6=5/6672-391=281594+(902-259)=1237595+134-71=658150×5-737=13250×2+321=821486+(218-70)=634468-455+430=443142+(339-35)=446367+92=459140×7+860=1840387-314=73801-733=68893-634+341=600605-(511-288)=382818-409-398=11868×2-781=95535+131+526=692968-76×5=588117×3-108=243356-59×4=120700×(677-671)=4200482-448=34953-130×5=303769-578+644=83526+78=104296-(47+220)=29842-432+256=666628×6-904=2864776+219-162=833100+(326-127)=29985×6=510203+125+185=513449-142-106=201258-169=89999-(938+44)=17362+847+563=1772124+343-390=7729×(123-116)=203795+451-907=33955-12-12=31459×2-348=570359+260+339=958804-171-424=209649+779-961=467345×(946-940)=2070450×2=900219×2=438372-12×3=336486+(188-157)=51796+158×4=72826×2+113=165608+913-976=545289-(418-402)=273735-241×3=12443-314-30=99475-11=464291+226=5171/4+2/4=3/4911-(485+270)=156938-148-344=44689+204-230=63336-(118-87)=30562×(312-308)=248397+71=468434×2+199=1067676-(913-559)=322210+66-40=236237-13×4=185968-14=954630+897-383=11443/5-2/5=1/5169+70=239987-453+244=778256-180=76855-(93+691)=71433-46=387119+268×2=655654-213×2=228417-365=5273×(447-441)=438951×(992-984)=760810×3+244=274732-(139+225)=368529×3-460=1127116-(47+30)=39496-372-119=5841-(739-688)=790234+454=688446+(165-68)=543278-(299-190)=169662-(325+300)=37195×4-616=164782×7=5474204×2=408769-(662-190)=297932-(262-118)=7882/6-1/6=1/6330-(324-312)=318418+(378-242)=554227×5=1135205×5=1025207+(865-641)=431548×7-151=3685359-145+177=391320-121-97=102567-(935-618)=250141+(471-240)=372365×2=73034×(161-156)=170266-239=2754×8=432290×3-727=143403-377=26204+260-31=433495-(38+65)=39284×3+25=277175-54=121358-273+91=176487-145=342288+117×3=639346-57=289397-381+80=96388+76=464445+41+456=942244-78×2=88272-14=258208-45×3=73218+256=47448×8+452=836315×3-601=344438-(478-125)=8585+(678-309)=454210+(359-243)=326317-(664-602)=255583-(434+22)=127329-34×2=261992-(590+122)=280390×(975-966)=3510889+885=177483×9-659=88367+975-607=735168-54-105=9350-26=324328-270+192=25082+(619-518)=183375×6=2250837-629-202=6316+130-365=81963-(556-293)=700572-379+84=277272×2+441=985638+797+816=2251132+671+580=1383285-(350-145)=80753-542=211966-62-320=584899-(987-695)=607229×2+893=1351167+305-402=70247×4-939=49823-221×2=38110×9=90288+214×3=930785+339-338=786492-348-103=41112+529=641178+40=218103+115-206=12877-(450+239)=188481+90=571575×8-248=435290-28+298=360127+(185-39)=273417-29×5=272465-(274+26)=165313-21-21=271210-(284-185)=111439-38+90=4915/9+4/9=1426×4-932=77260+229-195=94208+406+122=736130+(422-271)=281938-203×3=329785-708+71=148313-120=193157×(718-714)=628735-(452+128)=155713+822-754=781450-36-102=312126+192=318953-249-439=265923-90+546=1379375-(204+86)=85352-(222+122)=8442-259+441=624503-(26+329)=14897×8=776676-(128+274)=274188×(485-480)=940628×(732-725)=4396108+191×4=872612-36=57678+(855-43)=890323+150-400=73728-203-345=180451+316×3=1399268+133+459=860311+907-833=385481-(67-52)=4661/7+2/7=3/7162-23×3=93279-(125+135)=19127×2=254913-(389+442)=82713-45-425=243261-18×9=99393-64×6=9890-16-472=402104×7=728141×(333-330)=423507+109=616192×4=768976+705+428=2109209+238-254=193338-337+304=305814-89-591=134993+981=1974491-(459-277)=309359-209-35=115233-120=113362+(371-139)=594856-(76+740)=40462+(315-307)=470714-(619-106)=201155+36=191436-156×2=124196-18×3=142319-241+376=454718+(413-358)=773899-866+450=483485+206-49=64293×2+557=743456+213=669341-(65+132)=144826-790+794=830282×(379-376)=846178+264=442117-10×2=9796×5-191=289312×2-406=218422+(316-87)=651615-(397+198)=20608×(617-612)=3040233-61+109=28116+85=101901-119×5=306777×6-348=4314198+211+183=592168×4-386=286292-17+24=299762+975-235=1502932-11=92172+324=396799+815=1614110-12×6=38330-311+14=33319×3+463=142044×4=17668×8+125=669337+573=910749-(579-411)=581347-112-222=13610-174-77=359645-78=567453-263=190168-(151-118)=135888-(338+94)=456231×