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732-166-413=333-(482-444)=396+(526-86)=57×(233-230)=354+72-183=84×9=861-638+593=967-102×9=58×5-177=163+315+279=90×5=470-(176+281)=55+213=85×5=80×7=77×5-12=460+(738-109)=759-(623-317)=99+295+394=319-(96+145)=224×2+735=954+(591-533)=763×(76-68)=735+357-958=736×3-264=386+101×9=920×(329-325)=638-65×5=750-20×5=234×2-396=281-(66+42)=442+705-243=385-(270+85)=338-(328-264)=19×5=79+392-31=211+429=460-200-197=243+81+647=298-(153+129)=737×(400-393)=479+(931-589)=166+143+602=327-15×6=162×6+502=218+138-310=971-243-639=49+227=720-(764-189)=3/5+2/5=422+(676-226)=448×2=213+213-214=325-93×3=384-31×9=338-181=375+(183-70)=2/3-1/3=289+501=873+(743-459)=349+317+72=196×2=305+(455-154)=456-(686-523)=798+500+180=101×7-20=246-(315-304)=154+(473-161)=259+190-135=236+(462-226)=500×7-85=305+(398-72)=195+(319-52)=164+(439-389)=301+185-429=111-(138-128)=423×2=549+206=762×7-388=761+460-944=234-(331-220)=92+109-28=973-350-267=99×4-149=224-(120+87)=337-62=153-37+788=37×(199-190)=126+68=19×(206-202)=587×(359-352)=173×5+46=450-210×2=243-203-27=332-110=280+164-102=617-390+600=251-(105-44)=398+350+125=979-119×7=139-16×2=520×7=515+165+255=61+13+563=360-36×4=527-(212+254)=2/6-1/6=123×(231-227)=801×3-824=695×5=2/9+4/9=289+152+351=810-498+354=305+(454-371)=1/5+2/5=445-(266+101)=208-(379-298)=231×5-901=144+(461-213)=54+(173-157)=780-110×5=941×7=328-234=673-(156+149)=117-31+78=474-443+248=5/8-1/8=205+403=285+123-110=393×(117-114)=427+(851-634)=175+330+643=82×5+454=354-26-31=461-95×3=636-380+712=31×(428-420)=240-(473-306)=223×(39-35)=500×2-90=476-(213-114)=667-(535+36)=987-(826-440)=595×9=130×3=74×5+713=439-226-146=112×3=869×9-690=503×3-175=99×7-131=106×5+524=335+69×9=378-72×3=420-(135+214)=436-46×9=149×6+43=356+871=23+(694-401)=196-141=774+659=436-347=224-98=276-194=738-(88+647)=1/9+6/9=936+641-192=951×2=234-152=139+346-96=192×(296-292)=496-209-50=994-(663+201)=97+832-303=643-295=190×5+25=51+137+138=761+147×4=458×(702-693)=646×9=5/6-1/6=152×8-883=644-255×2=335+363=537-533+651=624-(645-586)=305-100=370+417=453-(789-545)=25×6+592=202-(25+114)=240+(299-26)=3/8+4/8=606+159-59=466-335+180=106×9-463=283-28×9=154×6+42=449-(202-23)=1/3+2/3=53×2+396=343-(311-113)=121+381+107=38×(434-429)=477-73+38=455-156-281=233-164-38=679+699+968=444-330+373=553-(285+137)=338+132-469=458-32=852-(697-36)=84×2=4/8-3/8=232×3+186=245-22×4=817×2-918=491-250=382-(430-225)=98+85=448-(338+44)=836-58×3=231-23×2=803-(510-120)=417-88×2=920-824=349-307-16=173×4+223=490-134-66=456×7=72+62=265+474=40+80×3=107-(411-347)=109×(151-142)=619×8-31=340-329+297=558×3=444-199×2=789+123+86=31×(239-236)=117-99+468=288-15×9=291+200×5=34+155+691=408-52×6=118+581=923-123×6=27+628+242=102+379-398=328+208=906-242-48=460+179+326=404-287-83=430×4=408-55=455-(423-65)=318×(388-380)=488-85-109=880-(910-353)=910-544-160=646+420-376=621+414+909=46+702+841=67×(172-166)=774-(344+285)=710+(224-58)=558×2-446=141×3-373=783+65×4=4/10-1/10=201×4+120=930-(616+256)=840+78+79=184+35×3=645×9-729=763-(483-388)=41×9=34×6-189=4/7-2/7=241×3-164=342-55×2=676-(52+511)=2/4-1/4=423-286=976+107×9=88×8=339+192×3=106+389=724×8-832=51+(550-159)=241×(395-392)=803-248-146=322-149-153=768-734+582=259+108×5=635+608-733=493+(333-281)=688-304=744-303=423-(465-188)=271-14=281+105-271=953-13×5=16+819+17=111-98=521+282+142=281+63=250+18-56=22×(453-445)=2/7+3/7=451-(294-284)=782+388=98+336=799-(304+326)=11×(351-343)=403-(49+176)=102×2=668+648-360=640-477+718=594-268=115+98=635×7=108+419=987-402=974-54×4=172+230=797×(416-413)=899-(898-378)=100×5-300=232-40+281=2/7+5/7=88×(409-404)=455+264+636=163+217=321-(414-199)=164+642+935=968-47+368=424-94×4=803-788=556+(672-570)=278+91=909+715=848×3-741=707×5-94=329-182-143=674-14=357-(940-669)=155+475=464-311+80=447-223=945-450=787-180+997=251-(162+87)=638-68×3=456-107+47=391-193=373-(18+217)=305+479-657=28+135-159=621+(505-403)=310×3=404-(182+218)=102+277+542=158×5-188=812-155×4=741-18×6=449+(411-243)=395×2+86=757-509+195=646×4-852=362+148+471=346-(99+106)=157×2=859×7=238-16-152=769-746=55×6-224=744-442+33=912×(854-847)=437-424+200=378+87-195=484-253=172-170+432=919-130=299-35-240=242+90×3=465×2=352-(76+43)=563-138-296=162-(546-506)=444-92-145=78+59-37=702+(508-259)=992-185+647=132×(189-186)=500-81=163+199=495×2=29+(802-106)=111×(352-346)=138-125+388=715-420+330=262-262+464=175×3=430-17×5=374-165+153=305-49=311-(350-201)=396-88=730-310-102=919-(39+46)=109+33=108+90×2=67×7-168=966-583+641=349-(425-359)=486-83-401=520+522+694=113×4+79=812-66-104=261+104-358=54+22=722-515=245+215=102+62-26=500-(478-380)=609+210+982=928-114×8=275-141-72=661-224-13=226×(118-114)=868-409-181=388-(117-72)=426-128-186=174+304+479=487-(458-23)=168+(449-132)=398+142=485-17-193=133+79=11×(44-41)=461-114×4=587-(133+328)=890+354×2=24×(447-443)=918-17×8=316×3-297=468×2-68=70×3+521=592-(487+93)=420+127×2=70×3+38=436+989=242-46-26=58×3=519-43×6=357+63=182+400+79=940-250-605=43+80+630=667-331×2=510-394-20=532×(508-503)=439-69-271=762-(157+488)=449+(122-97)=4/6-1/6=926-(520+46)=756-463+154=340+741+760=304-49×5=198+85×9=313-(498-286)=475-82-243=873-(590-190)=872-290×3=994-314=201+22-22=651-(115+324)=450-46-270=407-61×5=590-149-299=676×(623-620)=259×(889-881)=153+88×4=62-53+248=299+94-345=161+324×2=441-46×3=149+199×2=492+(488-323)=457×2=64×6=627×(758-755)=853-(186+259)=296+119×5=331+489-463=221-21-36=442-99=412-250-108=741-(611-364)=15×3=289-(175-129)=470-342+258=258+(740-460)=644×2-583=986-101-12=187+(663-275)=360-337=319×3-368=134+945-221=650-506-21=902+777+470=221-58=279-21=381-(46+43)=143+123-97=622×5-294=75×6-219=447-134×3=187×9=484-365+992=477-81×3=431+(315-241)=807-(224+300)=307×(242-236)=403-388-10=20+459-41=393×(544-541)=110-(673-578)=178×(445-442)=960-694+528=412-(459-238)=879+790+914=89-12+298=283-122=412-(204+117)=555×5=217+48-213=390×2-686=209×8=350-145+528=773-763+317=953-(879-557)=92×4=231+(100-38)=94×4=925+267+364=432+944-353=896-561+873=868+(831-795)=242×9=888×(136-132)=127-(405-327)=956-(279+221)=994-72=222+597+692=476+549+942=736-29=29×5=4/7+3/7=124+203-48=682-(597-402)=983+302-270=90×3+449=160×5-449=362+435+371=130+38+354=164×6-603=365-11-141=969-793+271=409+144+415=639×8=676×6-32=234×(489-486)=983-165×5=281×3+143=69+62=264-(25+31)=363-(380-277)=393+(455-313)=449-57=6/8-1/8=329-(99+195)=879-135×4=199×2=516+(515-152)=475×4-285=224-88=955-(308+195)=743-(994-524)=484-64×6=120+144-120=80×8+635=471×2=124+191×2=312-(239+53)=362-(208+18)=280-202+48=17+463+25=363-25×4=471+(509-475)=489-330-50=459-(294-68)=708-(619-56)=419-(54+319)=624-222+155=161+144=809-55×4=408-400+54=73+185=274+(380-45)=806-561+965=752-(560-412)=125×7+913=86×7=759-644-80=468-24=903-69-127=39+17+740=152×(519-510)=751-(274+188)=487-(96+147)=746-(367+350)=249×3-312=733+981+953=941+118+892=165+(472-22)=325+(393-359)=676+424-635=395-308=456-83=442-101=452-273-22=492-(228+14)=275+90×5=385+(281-102)=570+219=733+920+41=850-193+700=299+40+343=315-(68+86)=227×7-463=60+507+31=262×(117-114)=355-47×3=346+(112-110)=546+663=571+693-702=907×5=394-(358-306)=844-67-391=309+57-263=407-43×2=229+168=423-418+408=251+(253-178)=837-536=186-(76+90)=337-(33+77)=307+90=447-416+60=527+961+569=221+(692-235)=222-27×7=106+(825-605)=439+684-222=424+25-111=71×4+171=459×2-702=334-(371-361)=54×7+449=218×4-793=94+123-132=893-82=73×(299-296)=541+631-94=472-42-206=464+(445-156)=522×2-679=383+26×5=299×3+835=351+(375-146)=354+102×2=368×2+811=855+568=260-237+98=747-676+610=3/7-2/7=142+137+333=118-(91-54)=999-(445+425)=201-45-35=138×(826-818)=118+237=445×(505-499)=906-207×4=1/8+4/8=381-54×2=886×7-314=450-10=49-22=427-147=387-(123+235)=224×2=247×(362-357)=227+227-287=161×(194-189)=890-(94+281)=78-45=472-255-133=998+526+546=222+131=103×2=32×6+131=110+899-375=324+(256-17)=156+139=441+259-200=210×4-702=711-(408+272)=109×6=61+349=126+222=41×(704-699)=494-(78+196)=311×(36-33)=840-(397-191)=511×8-831=88+295-253=420-(58+145)=82+265=339-114+248=180-(462-408)=116×2-11=993-(885-531)=233+111-308=482+584-437=211+406+255=972-333+919=950×3=525+33+364=816×4-281=52×7+53=414×5-399=479-93=284×4-141=428+(435-267)=401-315-26=30×(184-175)=320-(71+221)=269-(149+82)=401-31×3=463-147×3=834-403-231=467×2-480=769+154+22=43×7=709×(130-124)=301+(415-81)=208+121-294=456×9=999+678-279=330×3=114+313=974+407=402×(590-586)=130+58×3=265+207+424=377-351-17=533-124-16=347-(116+83)=171×8-330=735+929=499-310=160+108=86+247=138×5+218=893-655-178=437-243+29=891×(508-499)=874-19×8=43×(229-223)=432+(610-394)=13+40=98+(772-87)=447+789-971=425×(336-328)=825×4=123×(497-491)=145+252+508=747-(137+194)=269×2=252+95×3=4/8-1/8=761-53-110=343-(610-295)=183×(431-427)=279+220-256=319-(240-122)=48+(871-576)=632-412=304-38×3=804-(716-704)=191+(498-196)=471×5=287-167+24=55×4+485=417×(662-654)=105+376=610+(827-139)=303+99-360=75×(400-393)=353-119×2=269-(969-749)=329-154=407-57×3=219-189+333=177+152×2=65+(464-142)=507-127+836=670-346-144=214+573+310=155×4-582=286+450=807×(262-256)=372+286=112×5=332-168+184=259+(422-71)=466-190×2=124+56×6=4/8+2/8=900-295=228-40+120=156×2=618+668-485=819+79-808=341+82×2=173×3-482=476-(913-911)=260×2-374=599-30=61×(45-39)=557×(853-848)=531+189×4=107-55+430=362+638=484+(847-316)=283-195+104=307×2-361=498+(200-187)=392×6=171+118+344=1/4+2/4=34+116=782+372×2=983+192+178=102×9=844-22+934=48+332+394=460-24-162=参考答案732-166-413=153333-(482-444)=295396+(526-86)=83657×(233-230)=171354+72-183=24384×9=756861-638+593=816967-102×9=4958×5-177=113163+315+279=75790×5=450470-(176+281)=1355+213=26885×5=42580×7=56077×5-12=373460+(738-109)=1089759-(623-317)=45399+295+394=788319-(96+145)=78224×2+735=1183954+(591-533)=1012763×(76-68)=6104735+357-958=134736×3-264=1944386+101×9=1295920×(329-325)=3680638-65×5=313750-20×5=650234×2-396=72281-(66+42)=173442+705-243=904385-(270+85)=30338-(328-264)=27419×5=9579+392-31=440211+429=640460-200-197=63243+81+647=971298-(153+129)=16737×(400-393)=5159479+(931-589)=821166+143+602=911327-15×6=237162×6+502=1474218+138-310=46971-243-639=8949+227=276720-(764-189)=1453/5+2/5=1422+(676-226)=872448×2=896213+213-214=212325-93×3=46384-31×9=105338-181=157375+(183-70)=4882/3-1/3=1/3289+501=790873+(743-459)=1157349+317+72=738196×2=392305+(455-154)=606456-(686-523)=293798+500+180=1478101×7-20=687246-(315-304)=235154+(473-161)=466259+190-135=314236+(462-226)=472500×7-85=3415305+(398-72)=631195+(319-52)=462164+(439-389)=214301+185-429=57111-(138-128)=101423×2=846549+206=755762×7-388=4946761+460-944=277234-(331-220)=12392+109-28=173973-350-267=35699×4-149=247224-(120+87)=17337-62=275153-37+788=90437×(199-190)=333126+68=19419×(206-202)=76587×(359-352)=4109173×5+46=911450-210×2=30243-203-27=13332-110=222280+164-102=342617-390+600=827251-(105-44)=190398+350+125=873979-119×7=146139-16×2=107520×7=3640515+165+255=93561+13+563=637360-36×4=216527-(212+254)=612/6-1/6=1/6123×(231-227)=492801×3-824=1579695×5=34752/9+4/9=6/9289+152+351=792810-498+354=666305+(454-371)=3881/5+2/5=3/5445-(266+101)=78208-(379-298)=127231×5-901=254144+(461-213)=39254+(173-157)=70780-110×5=230941×7=6587328-234=94673-(156+149)=368117-31+78=164474-443+248=2795/8-1/8=4/8205+403=608285+123-110=298393×(117-114)=1179427+(851-634)=644175+330+643=114882×5+454=864354-26-31=297461-95×3=176636-380+712=96831×(428-420)=248240-(473-306)=73223×(39-35)=892500×2-90=910476-(213-114)=377667-(535+36)=96987-(826-440)=601595×9=5355130×3=39074×5+713=1083439-226-146=67112×3=336869×9-690=7131503×3-175=133499×7-131=562106×5+524=1054335+69×9=956378-72×3=162420-(135+214)=71436-46×9=22149×6+43=937356+871=122723+(694-401)=316196-141=55774+659=1433436-347=89224-98=126276-194=82738-(88+647)=31/9+6/9=7/9936+641-192=1385951×2=1902234-152=82139+346-96=389192×(296-292)=768496-209-50=237994-(663+201)=13097+832-303=626643-295=348190×5+25=97551+137+138=326761+147×4=1349458×(702-693)=4122646×9=58145/6-1/6=4/6152×8-883=333644-255×2=134335+363=698537-533+651=655624-(645-586)=565305-100=205370+417=787453-(789-545)=20925×6+592=742202-(25+114)=63240+(299-26)=5133/8+4/8=7/8606+159-59=706466-335+180=311106×9-463=491283-28×9=31154×6+42=966449-(202-23)=2701/3+2/3=153×2+396=502343-(311-113)=145121+381+107=60938×(434-429)=190477-73+38=442455-156-281=18233-164-38=31679+699+968=2346444-330+373=487553-(285+137)=131338+132-469=1458-32=426852-(697-36)=19184×2=1684/8-3/8=1/8232×3+186=882245-22×4=157817×2-918=716491-250=241382-(430-225)=17798+85=183448-(338+44)=66836-58×3=662231-23×2=185803-(510-120)=413417-88×2=241920-824=96349-307-16=26173×4+223=915490-134-66=290456×7=319272+62=134265+474=73940+80×3=280107-(411-347)=43109×(151-142)=981619×8-31=4921340-329+297=308558×3=1674444-199×2=46789+123+86=99831×(239-236)=93117-99+468=486288-15×9=153291+200×5=129134+155+691=880408-52×6=96118+581=699923-123×6=18527+628+242=897102+379-398=83328+208=536906-242-48=616460+179+326=965404-287-83=34430×4=1720408-55=353455-(423-65)=97318×(388-380)=2544488-85-109=294880-(910-353)=323910-544-160=206646+420-376=690621+414+909=194446+702+841=158967×(172-166)=402774-(344+285)=145710+(224-58)=876558×2-446=670141×3-373=50783+65×4=10434/10-1/10=3/10201×4+120=924930-(616+256)=58840+78+79=997184+35×3=289645×9-729=5076763-(483-388)=66841×9=36934×6-189=154/7-2/7=2/7241×3-164=559342-55×2=232676-(52+511)=1132/4-1/4=1/4423-286=137976+107×9=193988×8=704339+192×3=915106+389=495724×8-832=496051+(550-159)=442241×(395-392)=723803-248-146=409322-149-153=20768-734+582=616259+108×5=799635+608-733=510493+(333-281)=545688-304=384744-303=441423-(465-188)=146271-14=257281+105-271=115953-13×5=88816+819+17=852111-98=13521+282+142=945281+63=344250+18-56=21222×(453-445)=1762/7+3/7=5/7451-(294-284)=441782+388=117098+336=434799-(304+326)=16911×(351-343)=88403-(49+176)=178102×2=204668+648-360=956640-477+718=881594-268=326115+98=213635×7=4445108+419=527987-402=585974-54×4=758172+230=402797×(416-413)=2391899-(898-378)=379100×5-300=200232-40+281=4732/7+5/7=188×(409-404)=440455+264+636=1355163+217=380321-(414-199)=106164+642+935=1741968-47+368=1289424-94×4=48803-788=15556+(672-570)=658278+91=369909+715=1624848×3-741=1803707×5-94=3441329-182-143=4674-14=660357-(940-669)=86155+475=630464-311+80=233447-223=224945-450=495787-180+997=1604251-(162+87)=2638-68×3=434456-107+47=396391-193=198373-(18+217)=138305+479-657=12728+135-159=4621+(505-403)=723310×3=930404-(182+218)=4102+277+542=921158×5-188=602812-155×4=192741-18×6=633449+(411-243)=617395×2+86=876757-509+195=443646×4-852=1732362+148+471=981346-(99+106)=141157×2=314859×7=6013238-16-152=70769-746=2355×6-224=106744-442+33=335912×(854-847)=6384437-424+200=213378+87-195=270484-253=231172-170+432=434919-130=789299-35-240=24242+90×3=512465×2=930352-(76+43)=233563-138-296=129162-(546-506)=122444-92-145=20778+59-37=100702+(508-259)=951992-185+647=1454132×(189-186)=396500-81=419163+199=362495×2=99029+(802-106)=725111×(352-346)=666138-125+388=401715-420+330=625262-262+464=464175×3=525430-17×5=345374-165+153=362305-49=256311-(350-201)=162396-88=308730-310-102=318919-(39+46)=834109+33=142108+90×2=28867×7-168=301966-583+641=1024349-(425-359)=283486-83-401=2520+522+694=1736113×4+79=531812-66-104=642261+104-358=754+22=76722-515=207245+215=460102+62-26=138500-(478-380)=402609+210+982=1801928-114×8=16275-141-72=62661-224-13=424226×(118-114)=904868-409-181=278388-(117-72)=343426-128-186=112174+304+479=957487-(458-23)=52168+(449-132)=485398+142=540485-17-193=275133+79=21211×(44-41)=33461-114×4=5587-(133+328)=126890+354×2=159824×(447-443)=96918-17×8=782316×3-297=651468×2-68=86870×3+521=731592-(487+93)=12420+127×2=67470×3+38=248436+989=1425242-46-26=17058×3=174519-43×6=261357+63=420182+400+79=661940-250-605=8543+80+630=753667-331×2=5510-394-20=96532×(508-503)=2660439-69-271=99762-(157+488)=117449+(122-97)=4744/6-1/6=3/6926-(520+46)=360756-463+154=447340+741+760=1841304-49×5=59198+85×9=963313-(498-286)=101475-82-243=150873-(590-190)=473872-290×3=2994-314=680201+22-22=201651-(115+324)=212450-46-270=134407-61×5=102590-149-299=142676×(623-620)=2028259×(889-881)=2072153+88×4=50562-53+248=257299+94-345=48161+324×2=809441-46×3=303149+199×2=547492+(488-323)=657457×2=91464×6=384627×(758-755)=1881853-(186+259)=408296+119×5=891331+489-463=357221-21-36=164442-99=343412-250-108=54741-(611-364)=49415×3=45289-(175-129)=243470-342+258=386258+(740-460)=538644×2-583=705986-101-12=873187+(663-275)=575360-337=23319×3-368=589134+945-221=858650-506-21=123902+777+470=2149221-58=163279-21=258381-(46+43)=292143+123-97=169622×5-294=281675×6-219=231447-134×3=45187×9=1683484-365+992=1111477-81×3=234431+(315-241)=505807-(224+300)=283307×(242-236)=1842403-388-10=520+459-41=438393×(544-541)=1179110-(673-578)=15178×(445-442)=534960-694+528=794412-(459-238)=191879+790+914=258389-12+298=375283-122=161412-(204+117)=91555×5=2775217+48-213=52390×2-686=94209×8=1672350-145+528=733773-763+317=327953-(879-557)=63192×4=368231+(100-38)=29394×4=376925+267+364=1556432+944-353=1023896-561+873=1208868+(831-795)=904242×9=2178888×(136-132)=3552127-(405-327)=49956-(279+221)=456994-72=922222+597+692=1511476+549+942=1967736-29=70729×5=1454/7+3/7=1124+203-48=279682-(597-402)=487983+302-270=101590×3+449=719160×5-449=351362+435+371=1168130+38+354=522164×6-603=381365-11-141=213969-793+271=447409+144+415=968639×8=5112676×6-32=4024234×(489-486)=702983-165×5=158281×3+143=98669+62=131264-(25+31)=208363-(380-277)=260393+(455-313)=535449-57=3926/8-1/8=5/8329-(99+195)=35879-135×4=339199×2=398516+(515-152)=879475×4-285=1615224-88=136955-(308+195)=452743-(994-524)=273484-64×6=100120+144-120=14480×8+635=1275471×2=942124+191×2=506312-(239+53)=20362-(208+18)=136280-202+48=12617+463+25=505363-25×4=263471+(509-475)=505489-330-50=109459-(294-68)=233708-(619-56)=145419-(54+319)=46624-222+155=557161+144=305809-55×4=589408-400+54=6273+185=258274+(380-45)=609806-561+965=1210752-(560-412)=604125×7+913=178886×7=602759-644-80=35468-24=444903-69-127=70739+17+740=796152×(519-510)=1368751-(274+188)=289487-(96+147)=244746-(367+350)=29249×3-312=435733+981+953=2667941+118+892=1951165+(472-22)=615325+(393-359)=359676+424-635=465395-308=87456-83=373442-101=341452-273-22=157492-(228+14)=250275+90×5=725385+(281-102)=564570+219=789733+920+41=1694850-193+700=1357299+40+343=682315-(68+86)=161227×7-463=112660+507+31=598262×(117-114)=786355-47×3=214346+(112-110)=348546+663=1209571+693-702=562907×5=4535394-(358-306)=342844-67-391=386309+57-263=103407-43×2=321229+168=397423-418+408=413251+(253-178)=326837-536=301186-(76+90)=20337-(33+77)=227307+90=397447-416+60=91527+961+569=2057221+(692-235)=678222-27×7=33106+(825-605)=326439+684-222=901424+25-111=33871×4+171=455459×2-702=216334-(371-361)=32454×7+449=827218×4-793=7994+123-132=85893-82=81173×(299-296)=219541+631-94=1078472-42-206=224464+(445-156)=753522×2-679=365383+26×5=513299×3+835=1732351+(375-146)=580354+102×2=558368×2+811=1547855+568=1423260-237+98=121747-676+610=6813/7-2/7=1/7142+137+333=612118-(91-54)=81999-(445+425)=129201-45-35=121138×(826-818)=1104118+237=355445×(505-499)=2670906-207×4=781/8+4/8=5/8381-54×2=273886×7-314=5888450-10=44049-22=27427-147=280387-(123+235)=29224×2=448247×(362-357)=1235227+227-287=167161×(194-189)=805890-(94+2