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413+(490-308)=237-76×2=139+(443-147)=232×5-415=313×2=27×3+900=222+651+606=500-157-246=712×5-966=687-(139+37)=302×(41-32)=46+117=823×8-50=298+135+27=145+248=86×(86-83)=683-476=863-(216+379)=791-(796-385)=890-(696+75)=39×(33-24)=266×3-662=66+193-62=323+968+818=142×(252-246)=60-21+430=910-69×2=865-170+907=325-(44-32)=416-(117+148)=205+188=122+101×7=475-273-103=72×9=386+300+57=571×3=254-77+77=229-184=141-109=355-85×4=293×3=375×2+233=489+204=895-73-596=311+906-674=28+471-31=896-52-446=464-23×9=707+253-209=6/8-1/8=443×(546-539)=421-228+157=135×(63-59)=408-70×2=535+113×8=45+726+18=630+541-129=726-78×6=101×9=40+355-333=949-(385+493)=850+58-429=939-301+217=471-(273+121)=116×8=320-273-36=409+276+180=425-35-170=45×6=869-480-112=762+173+521=293-(587-585)=92×(39-36)=2/3-1/3=576-(315+35)=97+253=931-(728-432)=290-(90+159)=808-136-610=633-80×7=281-218=193-(456-362)=129×(477-472)=827-22×9=686-598=855-(444+20)=57+207+275=904-12×2=935-389×2=337-266+261=833-25×9=110+197+219=493-245=99+61=580+(706-492)=316×6-108=187+229-377=340-114-153=166-135+465=677×(583-576)=67×2+428=11×9+372=357-256+238=140×7=582-(617-343)=689-542+414=80×(710-707)=40+521-560=607×(685-676)=189×(163-160)=67+91=751+(706-492)=524+235=491-360=198-134+169=333×2-591=133+653+883=897-453-52=340-105=984-324-161=432×(901-895)=225-14=413+973=430-(484-480)=15×(67-61)=633-(460-126)=112+(122-13)=356×5-945=470-(265+58)=712-275-414=456-240-20=166-(480-435)=851-(112+300)=40+412-266=25×5=448+23×9=307-133×2=338-24×2=376+198+177=262-86×2=644-133×3=248+128+153=288-(207-40)=342×8-861=324-(121+135)=431-336=178-100+307=418+910+720=46+(421-402)=512+110+61=650×6=896-169+662=620×(251-243)=465-131×3=432-(923-813)=429×3=824-(451+129)=485-(17+84)=458-(252+80)=180-132-32=462-32×6=295+146=894+496×2=262-75×2=892-404-461=836×(663-657)=134+402=519-(553-124)=310-(364-322)=51+185-193=163+81+448=329-80-149=328-278-19=62+(420-131)=279-61×4=255-128=76+43=190-19×6=43+(277-263)=424-33-145=709-(990-311)=41×(95-91)=630+(597-446)=632+785+860=373+213=106+264+585=793-(65+63)=216+(443-192)=80+253-82=52×8+93=98×7-458=242×9=71+26=418-272+181=566×(475-468)=133+226+212=132×5=981-311+606=329-78×4=178+118×5=109×2=880×(937-930)=16+431-127=599×(508-501)=206-166=193+88×6=48+246-14=401-375=129+210=436-(226+178)=44+377+385=941-(345-132)=101+(683-128)=952-366+315=306-(153+108)=654-(69+181)=431×2=152×3=274×(406-403)=434+(918-179)=68×6+120=592×2=339×4-332=103+91-189=979+910-329=240-(20+81)=167-(391-335)=453-(829-694)=542-(728-379)=137-(248-247)=186×5+859=650-44-79=95×9-826=451+172×2=165+198=85×6+331=190×5-765=982×6=480-288-178=146+139×2=80+107=553-310=728+779-757=269-(991-946)=408-371=285-248+191=482-365=5/8-2/8=279-131+246=107×2=465-104×4=81+96=69×9=113-(428-353)=866-(200-42)=883-68+660=600×4-951=477-379+126=481×2-223=155×2=345+211+334=169+257=745+796+969=478+(460-184)=596-499+994=763×8-501=655-225=934+363-624=509-500+957=994+955-818=81×2=86+243+499=328+450+611=354-230=393-(303-110)=615-399+818=458-(118+107)=818-(677-119)=210+36+95=532×6=32+(973-883)=146+(198-189)=88+219-194=290-251+219=74×(382-375)=455+110-98=135×(241-236)=990-(237+223)=83+132×6=19×6-11=67+221=154+60=29+684-154=59+43+457=845-(756+47)=373-161-176=624×7=2/7+4/7=29+63-41=802×9=247+56=164+409-87=427×2=893-31-353=124×6-44=325+835-354=274×3-430=94+169=721-314=380-53=164×5+631=774+453+406=206×4=380-331+76=328-15×4=604×4-517=107×7-490=650+(823-793)=590-560=412-74×3=121+(380-295)=135+70=995-(351+204)=716×3-637=117×(205-198)=974-679=884-391=472×2-904=588×3=243×3-122=589+179+727=195+377+51=972-12=480-(232+188)=845-171+279=335-10-267=47×6-259=363-55×4=54+285-11=967-(418-239)=2/5-1/5=689+113+824=398-257+20=197×(106-103)=571+821+294=371-158×2=255+99-52=376+146×3=762-172=182×6=989-375+185=596+878-708=1/3+2/3=409+374=277-269+198=26×3+42=382-239+177=143×3-172=245+79-294=392+(403-61)=3/7-1/7=747-(339+393)=86+413-282=205×(417-408)=587+(769-355)=419-85×3=798×(694-690)=206-(38+70)=349+326=923-196=978-(487+477)=535-30×9=118+299-281=33×(471-466)=498-35×2=71×5+29=353-126=459-(213-205)=395+777+563=481-118-81=37×6+799=282-34×3=77+596-424=338-78+198=157+143+581=697×4-523=263×7-913=27+377-381=392×2-162=310-93-85=90+313=419-207=333+(958-397)=473-(285-20)=5/9-2/9=621-519=200+847+21=673-164×3=554-35×8=432-(127+239)=3/6-2/6=161×2-248=997-(415+107)=466+84+282=201×3-289=87×(19-14)=489-10×9=403-154-164=352-250+417=149+519+41=275×7=33×(125-117)=339-69+32=66×7-316=82×3+89=500-(235+205)=434-178-59=98×4=54×2+527=269+719+345=484-(16+145)=240-(122+26)=28+(400-389)=5/10-4/10=589+99×7=173+31-10=437×2-288=30+56=567-419+640=365+(350-129)=311-104-128=204×2+54=141×6+185=822-63-27=1/4+2/4=200+78=283-55×5=805+667=415-137×3=180+964+452=5/7-1/7=276-106=990+684=165×6-421=550+758+85=39×6+777=908+149-978=60-(246-245)=451-122-127=708-111-170=698×6=251+(65-48)=736-278-294=721+77+104=547×5=447-(639-251)=307-(490-386)=832+67-167=80+478+243=307×3=347-54+798=5/9+3/9=30+854+95=4/8+2/8=226×2+77=256-53×4=656-302-49=603×9-926=3/6-1/6=439+10×7=725+(488-349)=105+66=331-(459-166)=459+16+97=446-27=133×4=483-20-350=760-142×3=307+(423-222)=123×(417-409)=277+257=485×2-619=56+296+406=636×(23-15)=128+91=260-(302-243)=496-64×5=242+(803-208)=92×(301-298)=161+298-93=219×3+488=491-(306+176)=302+96=181-92-25=228+68-98=892-478=636+225×4=835-31-179=63+174×2=476+473-841=414-324=417+227-53=316-13-294=285+15×3=918-(566+340)=345×(344-338)=574+53+859=782×(910-902)=111×7+108=105+237×3=413+(761-53)=437-173=168+888=189+630+169=531-59-451=4/9+5/9=484-94-140=85+119=92+350-145=789-(270+230)=353-81×3=147+345=433-48-200=518-22+838=416-(370-158)=854×(894-888)=188+29×9=905+99×5=631×4-897=581×(455-448)=59×9=314-33×6=33×7+329=288-(166-28)=295+18-127=816×(975-966)=185×2+325=473+185×2=981+(534-222)=387-112-51=482+409=75+189=61-(11+26)=90×(965-957)=174-50+213=831+986-27=2/7+3/7=287-(79+152)=433-33×9=365-334+31=189×5-914=355×(570-565)=421-(148-116)=644+92+986=889-169-448=370-(764-639)=356+75-151=112+326=92+280=970-211-352=458-(228-137)=569-192=965+658=180×2+265=381+(239-142)=807-38×8=455-53×2=254-24-158=686+577+581=635-(377-145)=756+22×6=157+399=38+121+11=503×5=4/8-3/8=736×2-471=437-25-346=179×(494-489)=507-309=456-398=316+(374-170)=421-27-32=648×5-62=1/5+2/5=445+(446-137)=410×2-312=516+888-563=161×(173-170)=180+580+10=5/8+2/8=297×3=818-133×3=110+340-425=17×8=96-35=187×3-351=989-(692+200)=863×6-989=536×(973-969)=223×3+461=466+804=186-(19+119)=393-98×3=83-51+178=806-771+497=114+626=646-320+854=51×(359-356)=470-359=831-351=212+132+82=222+340×2=212-(322-147)=937-629-102=743-(150+319)=699-78×5=220-143=723×(337-330)=22×3+145=876-(740-309)=358-(195-177)=676+640-605=293×(841-833)=365-(208+12)=36+257+57=557×6=268-(515-381)=241×(146-143)=496-481=923×8=366×2+436=237-(251-119)=222-33=457-(97+282)=101+243-325=489-(356-243)=320-30×8=976-171-552=374+(129-25)=321+(230-111)=880+602-181=943-330×2=210×4-831=929+88×7=340-(287-268)=409-(136+137)=135-(475-342)=115×4-103=945-688-51=448+959=583-(332+14)=98×(340-331)=980+471=904-160-519=51+69×5=93×9+352=541-317+345=429+961+591=829-(322-204)=428+(168-68)=947-619+81=190+54=20+(404-98)=977+(886-865)=45+18=21-(251-232)=362+165=111+317=461-48-216=860-679=683×2-303=866-42=436-52×3=121+37=535-28×3=422-19-113=427-73=763-(875-796)=386-(291-181)=415-(128+261)=370+387+980=809-168=441+(376-240)=331-32×4=500-381=52+947-400=133-48×2=70×5-267=65×4=127×4=576×7=353-198=360-321+405=319×5-228=324+177=436-150=311+103-296=383+(250-123)=195+845-510=778×4=451-(76+153)=732-597+555=724-(133+120)=40×4=363+134-177=876-815+379=83+296=338×2=357-23+49=424+290=60×7+357=186×7-421=921-473-325=243-182-43=2/4-1/4=829-(22+11)=942+492-102=398-(428-214)=459-215×2=930-280=246-54+50=426+398+20=469×2=334-218=540+(648-108)=474-390+902=919-(93+673)=140+(488-116)=450-(339+40)=158-21+340=155+(484-312)=734-(63+180)=907-150-167=183-31×2=132+133-128=405-(229+54)=354-196+194=461-53-28=990-207=336-(29+215)=126×(162-158)=152+(650-592)=321-(97+50)=560+143+123=187+73=657-436+66=328+137+31=246×(283-280)=18×(25-21)=120×6-663=230-194=140+(283-55)=957-381×2=158×4-121=326×7-878=817-122-459=917×(761-755)=829-48×8=892×7=721×6-903=16-(784-773)=488-(245+137)=351-(465-179)=622-556+343=236-104+160=38×2+197=468×2-709=338-121×2=138+(369-192)=252+(937-438)=800-(811-187)=663+92+678=408-349-21=935-375=542×3=1/5+3/5=423-269+344=387×2-468=883-542+990=1/8+4/8=438+(119-10)=74+16×8=660+(509-85)=310×7=352-256+292=691+(767-92)=134+(558-213)=652+(912-156)=66+(487-392)=247-(157+41)=250-166+183=905+(465-203)=800-285+867=245-104=287+46×5=398-80=321×3=488-448+89=446×(410-404)=474+638-121=124+260-377=420-216+205=152×(323-317)=205×3+353=233-42-24=623-(517+53)=308+442=377×2=21×(140-134)=693+(237-120)=435-(679-621)=96+130+217=332×5-586=627+427+525=154×6-83=670+(465-414)=878+259-79=434×(786-778)=975-65×3=757-81=647+60×6=551×2-174=78+(192-79)=915+264×3=300+338×2=79+88-96=259+(960-617)=556-328-46=488×5=521×2=478+(430-37)=132×6-206=187×2=209+(401-129)=258+337+280=175×3=3/8+2/8=148+97=497-(462-32)=59×6-129=107-(140-82)=779+294-319=477×5=51×(345-337)=322-23×4=654-(387+185)=166×2=77-(228-158)=359+(407-27)=271+(304-39)=951-44×5=443×5-847=409-84=38×(73-68)=76×(54-45)=929-210=824+248×3=373-(238-195)=771-(208+238)=219+164=393+403×2=55×(64-59)=118-(279-184)=46×6=参考答案413+(490-308)=595237-76×2=85139+(443-147)=435232×5-415=745313×2=62627×3+900=981222+651+606=1479500-157-246=97712×5-966=2594687-(139+37)=511302×(41-32)=271846+117=163823×8-50=6534298+135+27=460145+248=39386×(86-83)=258683-476=207863-(216+379)=268791-(796-385)=380890-(696+75)=11939×(33-24)=351266×3-662=13666+193-62=197323+968+818=2109142×(252-246)=85260-21+430=469910-69×2=772865-170+907=1602325-(44-32)=313416-(117+148)=151205+188=393122+101×7=829475-273-103=9972×9=648386+300+57=743571×3=1713254-77+77=254229-184=45141-109=32355-85×4=15293×3=879375×2+233=983489+204=693895-73-596=226311+906-674=54328+471-31=468896-52-446=398464-23×9=257707+253-209=7516/8-1/8=5/8443×(546-539)=3101421-228+157=350135×(63-59)=540408-70×2=268535+113×8=143945+726+18=789630+541-129=1042726-78×6=258101×9=90940+355-333=62949-(385+493)=71850+58-429=479939-301+217=855471-(273+121)=77116×8=928320-273-36=11409+276+180=865425-35-170=22045×6=270869-480-112=277762+173+521=1456293-(587-585)=29192×(39-36)=2762/3-1/3=1/3576-(315+35)=22697+253=350931-(728-432)=635290-(90+159)=41808-136-610=62633-80×7=73281-218=63193-(456-362)=99129×(477-472)=645827-22×9=629686-598=88855-(444+20)=39157+207+275=539904-12×2=880935-389×2=157337-266+261=332833-25×9=608110+197+219=526493-245=24899+61=160580+(706-492)=794316×6-108=1788187+229-377=39340-114-153=73166-135+465=496677×(583-576)=473967×2+428=56211×9+372=471357-256+238=339140×7=980582-(617-343)=308689-542+414=56180×(710-707)=24040+521-560=1607×(685-676)=5463189×(163-160)=56767+91=158751+(706-492)=965524+235=759491-360=131198-134+169=233333×2-591=75133+653+883=1669897-453-52=392340-105=235984-324-161=499432×(901-895)=2592225-14=211413+973=1386430-(484-480)=42615×(67-61)=90633-(460-126)=299112+(122-13)=221356×5-945=835470-(265+58)=147712-275-414=23456-240-20=196166-(480-435)=121851-(112+300)=43940+412-266=18625×5=125448+23×9=655307-133×2=41338-24×2=290376+198+177=751262-86×2=90644-133×3=245248+128+153=529288-(207-40)=121342×8-861=1875324-(121+135)=68431-336=95178-100+307=385418+910+720=204846+(421-402)=65512+110+61=683650×6=3900896-169+662=1389620×(251-243)=4960465-131×3=72432-(923-813)=322429×3=1287824-(451+129)=244485-(17+84)=384458-(252+80)=126180-132-32=16462-32×6=270295+146=441894+496×2=1886262-75×2=112892-404-461=27836×(663-657)=5016134+402=536519-(553-124)=90310-(364-322)=26851+185-193=43163+81+448=692329-80-149=100328-278-19=3162+(420-131)=351279-61×4=35255-128=12776+43=119190-19×6=7643+(277-263)=57424-33-145=246709-(990-311)=3041×(95-91)=164630+(597-446)=781632+785+860=2277373+213=586106+264+585=955793-(65+63)=665216+(443-192)=46780+253-82=25152×8+93=50998×7-458=228242×9=217871+26=97418-272+181=327566×(475-468)=3962133+226+212=571132×5=660981-311+606=1276329-78×4=17178+118×5=768109×2=218880×(937-930)=616016+431-127=320599×(508-501)=4193206-166=40193+88×6=72148+246-14=280401-375=26129+210=339436-(226+178)=3244+377+385=806941-(345-132)=728101+(683-128)=656952-366+315=901306-(153+108)=45654-(69+181)=404431×2=862152×3=456274×(406-403)=822434+(918-179)=117368×6+120=528592×2=1184339×4-332=1024103+91-189=5979+910-329=1560240-(20+81)=139167-(391-335)=111453-(829-694)=318542-(728-379)=193137-(248-247)=136186×5+859=1789650-44-79=52795×9-826=29451+172×2=795165+198=36385×6+331=841190×5-765=185982×6=5892480-288-178=14146+139×2=42480+107=187553-310=243728+779-757=750269-(991-946)=224408-371=37285-248+191=228482-365=1175/8-2/8=3/8279-131+246=394107×2=214465-104×4=4981+96=17769×9=621113-(428-353)=38866-(200-42)=708883-68+660=1475600×4-951=1449477-379+126=224481×2-223=739155×2=310345+211+334=890169+257=426745+796+969=2510478+(460-184)=754596-499+994=1091763×8-501=5603655-225=430934+363-624=673509-500+957=966994+955-818=113181×2=16286+243+499=828328+450+611=1389354-230=124393-(303-110)=200615-399+818=1034458-(118+107)=233818-(677-119)=260210+36+95=341532×6=319232+(973-883)=122146+(198-189)=15588+219-194=113290-251+219=25874×(382-375)=518455+110-98=467135×(241-236)=675990-(237+223)=53083+132×6=87519×6-11=10367+221=288154+60=21429+684-154=55959+43+457=559845-(756+47)=42373-161-176=36624×7=43682/7+4/7=6/729+63-41=51802×9=7218247+56=303164+409-87=486427×2=854893-31-353=509124×6-44=700325+835-354=806274×3-430=39294+169=263721-314=407380-53=327164×5+631=1451774+453+406=1633206×4=824380-331+76=125328-15×4=268604×4-517=1899107×7-490=259650+(823-793)=680590-560=30412-74×3=190121+(380-295)=206135+70=205995-(351+204)=440716×3-637=1511117×(205-198)=819974-679=295884-391=493472×2-904=40588×3=1764243×3-122=607589+179+727=1495195+377+51=623972-12=960480-(232+188)=60845-171+279=953335-10-267=5847×6-259=23363-55×4=14354+285-11=328967-(418-239)=7882/5-1/5=1/5689+113+824=1626398-257+20=161197×(106-103)=591571+821+294=1686371-158×2=55255+99-52=302376+146×3=814762-172=590182×6=1092989-375+185=799596+878-708=7661/3+2/3=1409+374=783277-269+198=20626×3+42=120382-239+177=320143×3-172=257245+79-294=30392+(403-61)=7343/7-1/7=2/7747-(339+393)=1586+413-282=217205×(417-408)=1845587+(769-355)=1001419-85×3=164798×(694-690)=3192206-(38+70)=98349+326=675923-196=727978-(487+477)=14535-30×9=265118+299-281=13633×(471-466)=165498-35×2=42871×5+29=384353-126=227459-(213-205)=451395+777+563=1735481-118-81=28237×6+799=1021282-34×3=18077+596-424=249338-78+198=458157+143+581=881697×4-523=2265263×7-913=92827+377-381=23392×2-162=622310-93-85=13290+313=403419-207=212333+(958-397)=894473-(285-20)=2085/9-2/9=3/9621-519=102200+847+21=1068673-164×3=181554-35×8=274432-(127+239)=663/6-2/6=1/6161×2-248=74997-(415+107)=475466+84+282=832201×3-289=31487×(19-14)=435489-10×9=399403-154-164=85352-250+417=519149+519+41=709275×7=192533×(125-117)=264339-69+32=30266×7-316=14682×3+89=335500-(235+205)=60434-178-59=19798×4=39254×2+527=635269+719+345=1333484-(16+145)=323240-(122+26)=9228+(400-389)=395/10-4/10=1/10589+99×7=1282173+31-10=194437×2-288=58630+56=86567-419+640=788365+(350-129)=586311-104-128=79204×2+54=462141×6+185=1031822-63-27=7321/4+2/4=3/4200+78=278283-55×5=8805+667=1472415-137×3=4180+964+452=15965/7-1/7=4/7276-106=170990+684=1674165×6-421=569550+758+85=139339×6+777=1011908+149-978=7960-(246-245)=59451-122-127=202708-111-170=427698×6=4188251+(65-48)=268736-278-294=164721+77+104=902547×5=2735447-(639-251)=59307-(490-386)=203832+67-167=73280+478+243=801307×3=921347-54+798=10915/9+3/9=8/930+854+95=9794/8+2/8=6/8226×2+77=529256-53×4=44656-302-49=305603×9-926=45013/6-1/6=2/6439+10×7=509725+(488-349)=864105+66=171331-(459-166)=38459+16+97=572446-27=419133×4=532483-20-350=113760-142×3=334307+(423-222)=508123×(417-409)=984277+257=534485×2-619=35156+296+406=758636×(23-15)=5088128+91=219260-(302-243)=201496-64×5=176242+(803-208)=83792×(301-298)=276161+298-93=366219×3+488=1145491-(306+176)=9302+96=398181-92-25=64228+68-98=198892-478=414636+225×4=1536835-31-179=62563+174×2=411476+473-841=108414-324=90417+227-53=591316-13-294=9285+15×3=330918-(566+340)=12345×(344-338)=2070574+53+859=1486782×(910-902)=6256111×7+108=885105+237×3=816413+(761-53)=1121437-173=264168+888=1056189+630+169=988531-59-451=214/9+5/9=1484-94-140=25085+119=20492+350-145=297789-(270+230)=289353-81×3=110147+345=492433-48-200=185518-22+838=1334416-(370-158)=204854×(894-888)=5124188+29×9=449905+99×5=1400631×4-897=1627581×(455-448)=406759×9=531314-33×6=11633×7+329=560288-(166-28)=150295+18-127=186816×(975-966)=7344185×2+325=695473+185×2=843981+(534-222)=1293387-112-51=224482+409=89175+189=26461-(11+26)=2490×(965-957)=720174-50+213=337831+986-27=17902/7+3/7=5/7287-(79+152)=56433-33×9=136365-334+31=62189×5-914=31355×(570-565)=1775421-(148-116)=389644+92+986=1722889-169-448=272370-(764-639)=245356+75-151=280112+326=43892+280=372970-211-352=407458-(228-137)=367569-192=377965+658=1623180×2+265=625381+(239-142)=478807-38×8=503455-53×2=349254-24-158=72686+577+581=1844635-(377-145)=403756+22×6=888157+399=55638+121+11=170503×5=25154/8-3/8=1/8736×2-471=1001437-25-346=66179×(494-489)=895507-309=198456-398=58316+(374-170)=520421-27-32=362648×5-62=31781/5+2/5=3/5445+(446-137)=754410×2-312=508516+888-563=841161×(173-170)=483180+580+10=7705/8+2/8=7/8297×3=891818-133×3=419110+340-425=2517×8=13696-35=61187×3-351=210989-(692+200)=97863×6-989=4189536×(973-969)=2144223×3+461=1130466+804=1270186-(19+119)=48393-98×3=9983-51+178=210806-771+497=532114+626=740646-320+854=118051×(359-356)=153470-359=111831-351=480212+132+82=426222+340×2=902212-(322-147)=37937-629-102=206743-(150+319)=274699-78×5=309220-143=77723×(337-330)=506122×3+145=211876-(740-309)=445358-(195-177)=340676+640-605=711293×(841-833)=2344365-(208+12)=14536+257+57=350557×6=3342268-(515-381)=134241×(146-143)=723496-481=15923×8=7384366×2+436=1168237-(251-119)=105222-33=189457-(97+282)=78101+243-325=19489-(356-243)=376320-30×8=80976-171-552=253374+(129-25)=478321+(230-111)=440880+602-181=1301943-330×2=283210×4-831=9929+88×7=1545340-(287-268)=321409-(136+137)=136135-(475-342)=2115×4-103=357945-688-51=206448+959=1407583-(332+14)=23798×(340-331)=882980+471=1451904-160-519=22551+69×5=39693×9+352=1189541-317+345=569429+961+591=1981829-(322-204)=711428+(168-68)=528947-619+81=409190+54=24420+(404-98)=326977+(886-865)=99845+18=6321-(251-232)=2362+165=527111+317=428461-48-216=197860-679=181683×2-303=1063866-42=824436-52×3=280121+37=158535-28×3=451422-19-113=290427-73=354763-(875-796)=684386-(291-181)=276415-(128+261)=26370+387+980=1737809-168=641441+(376-240)=577331-32×4=203500-381=11952+947-400=599133-48×2=3770×5-267=8365×4=260127×4=508576×7=4032353-198=155360-321+405=444319×5-228=1367324+177=501436-150=286311+103-296=118383+(250-123)=510195+845-510=530778×4=3112451-(76+153)=222732-597+555=690724-(133+120)=47140×4=160363+134-177=320876-815+379=44083+296=379338×2=676357-23+49=383424+290=71460×7+357=777186×7-421=881921-473-325=123243-182-43