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415+285=425-249+499=954×4=138+424×2=621+205+168=325+127=153×(117-114)=494-(81+254)=88+500-250=388+(474-305)=219-25×3=909-289-334=71×(331-325)=796-62×5=263+(681-447)=329+76-186=985-539=386-142×2=203×7-995=407×8-193=63×(91-88)=824×4-290=97+(454-85)=387×7-452=542+(581-517)=260+230×2=567-65=431-44×6=115×(118-111)=499+906=287×9=211×2+947=456×9-983=665-(672-119)=471+396-44=987+87-737=84×4+186=388+215-159=470-159-236=84×(294-287)=97+156=641+625+596=758-(18+374)=122×6-75=108×7+792=125×8=764-45×8=107×6=572-100×3=312+422×2=950×6=74×5=624-519+954=392+249=349-(112+80)=848×2-171=148+(327-28)=52×7+337=179×4+70=976+883=710+48×3=611-74×5=134+(812-668)=434+(493-147)=629×(82-76)=404-216+410=902+977+806=102×(362-357)=355×4=345×2-507=165×(743-737)=483-173=557+218-589=920-(714+66)=318×(905-900)=143+90+430=453+(296-92)=859-110×7=137+254=197-162=73+(486-470)=133-10=85×5+220=113×8+882=658×7-390=865-(983-568)=635+(233-200)=1/7+2/7=121×4-174=233-67-90=228-18-106=126×(205-199)=180+45=17×(141-136)=713×4-548=295-(352-222)=552×4=826-(742-682)=48+141=233+77=63×4=41×7=493-209-104=184-50+35=174-116+176=373-287-29=303-138-118=405-351+428=88×(99-91)=205-152+174=1/8+4/8=41+483+403=933+173+17=159+140×4=955+(910-880)=412×8-948=644-95+710=491+15+507=210+350×2=2/3-1/3=321+17-139=253-163=343×3-429=271-262+145=659+68×8=556+891-147=174×2-30=139×(217-213)=50×3+808=88+505+34=116×7-307=345×2-88=244-15×7=776-39-376=634-24-400=480-366-60=419-(259-54)=96+487+135=486+567=396+(387-292)=149+300=480+26×6=550-372+298=395-269+140=94×7=76+818+824=991-194-122=403-(228+35)=72×5+152=456+55+699=634+55×2=920-78-703=934+313+608=62×7+694=824-(23+231)=121+928-282=317+126=213-137=596+(578-424)=178×2+236=356-37-154=477-(210-35)=350-233-72=387+127+957=126×4-237=270+113=52+19=852-100-558=17+157×2=368×2=574+353=317-142+219=407-47×8=88+647+219=534×(679-670)=381-(271+92)=850+316=512-96×5=216+(984-195)=20+383-62=198+284-218=157×(383-377)=915-90×9=386-(215+97)=136+(740-97)=822-274×2=640-51×8=282-127×2=475-(310-283)=484-107-302=258+701-205=6/10+2/10=491-204=279+864=312+75×4=29+322×3=71-12=74×5+417=99+86=955-95=456-238+738=225+387+153=346-(108-32)=209-189=974-259+964=138-37×3=101+186=3/5-1/5=146×3+391=130+605+669=348×6=79×6=141+99-120=805-(277+234)=490×2-36=194×4+763=462-88×4=404+994=813+(735-402)=628×(565-556)=560×(516-510)=754-(399-280)=292-109=368-368+361=43×(155-149)=131+161-109=607-(358-345)=432+10×7=23+145+642=933-121-478=295×3-669=462-428=189+336=239×(984-978)=429-361+112=319×2-170=480-357=800-(643+157)=321-45×3=745-250-486=519-15×9=2/4-1/4=172×2-241=151×(617-612)=310-52-96=408×(879-876)=281×3-504=422-(59+69)=756-223-174=876-(28+405)=470-50×9=294+95=414-(930-628)=343-(121+47)=5/8+3/8=554-(123+23)=175×6=194×3=479-63×4=402-169+167=141+190-58=235+22-241=602-277+637=188×(467-462)=913×2=416-(214-132)=713+(547-105)=965+901=420×(790-786)=163+(950-609)=2/6+3/6=753-(542+87)=723-160=894-(373+125)=206-193+85=117+(519-485)=308-(421-262)=376×8=453-(405+34)=419-86=306-11-247=315+83+352=986-(551-350)=410+(442-28)=493-330=188-16=275+219-365=219-31×7=82-42=163×2-93=100+63-136=26×(465-462)=67+295-360=255+(329-258)=379-95=408×5=883-(54+661)=330-95×2=84×(330-321)=190-149+296=528+164=83×6-456=978×5=382-(424-412)=194×2+393=84×6+218=481-464=836+880+943=450×8-664=857+32+59=598×(129-121)=192+98-190=88×3=42×6=221+879+52=243+281+195=527+446-71=717-595-48=330+683+541=72+169=200×3=181+208-277=172+111=146×6-262=579+154+65=562-52×7=612-344-117=131+98+113=204×7-705=275-80×2=586+209=3/6-1/6=476×8=494+(312-296)=480-64×2=469-294=628+403×2=560×4=450-(392-257)=309×(116-113)=736-720+760=142×6=501+42×2=54+418+424=994-(698+240)=244-197=39+(352-247)=555+111=970+276-708=485-121=747×2-263=523×5-217=612-(255-163)=83×(210-201)=582-546=164×5-115=455-(85+31)=469-(271+152)=439-282+49=82×4=928-745+941=378+129×3=496-366-31=940-231=109×7=293+193+36=291+(488-87)=316×(817-810)=783-(593+67)=144×(102-98)=487-(499-253)=235×4=975-320+53=3/10+2/10=377-(22+86)=238×7-226=955+811-335=348+43+13=825-170+733=387-(52+261)=388-(847-763)=449-136+170=471-440+141=462-(335-127)=456×4=266+150=472×2-468=272×(44-41)=451-28×2=44+677-65=837-211=183-77-28=522×8=250+585+76=792-464-301=372-233-12=582+136×5=252-29+41=586-(375-330)=601-(132+444)=104-66=989-663+622=378-260+204=486+469-928=839+(634-168)=131×4-330=54-(334-308)=75×3=344-157×2=850-73×7=619-(85+444)=24×8=984-519-406=878+313+971=116+327=2/10+3/10=706+835-687=254-(10+80)=337-119×2=87+65=461-126+93=215-(40+77)=399-221+179=973-(681+160)=351-72×4=14×3=49×2=405-174-211=629×(337-330)=899+832+859=403-361=191-131+291=596+150×6=436×2=330-308=920×(979-971)=876-(959-724)=3/5-2/5=890-(933-226)=439+157=653-(653-24)=465+981-63=84+327+300=517-(995-862)=910-398+460=904×9-305=13×6-18=296+925-572=334-(470-321)=254+168=57+329=96×4+367=3/4-1/4=162-22×2=479-205-122=396+39+464=91+334-80=2/6-1/6=16+(150-26)=643+189×4=150+507+123=331+57=610+(482-447)=347+142+236=210-40=420+(493-149)=439-21×9=734-126=5/10-4/10=142-(212-143)=121×5+177=134×(425-418)=61+36×4=344+523+849=243-124-74=790-(108+170)=453-10-124=313×2-582=422-57-143=111×5-68=406-(359+24)=577+369-419=736-(294+264)=810×(997-989)=423-291-122=177+385+182=70×9+581=156+(159-38)=699-90×6=335-38×3=260-245+466=799+385=426-137-190=800-(39+618)=45×6+177=819-418-137=227+454+254=903-379×2=177+87=213+492+94=862+83-540=433×2-133=210+584-743=378+117=3/10-2/10=178+204=824-(286+130)=787+866-154=415-79×4=599+250-599=364-(19+210)=580×2-971=335+157×2=160+(362-74)=52+(479-53)=299×(101-93)=22+(394-356)=773×(966-957)=95+133-106=491-33-329=180+380×2=137×6-196=70-(392-377)=833+129+58=432+(366-35)=569-229=36+247+602=847-(432-191)=440-202-78=490-97-320=87+(336-329)=161+257-77=760-87×6=271×3=504-210=177+676-156=482-(31+396)=116+334+88=756-528+832=368×5-471=378×2=84+68×6=338+156=335-29×8=328-100=873-474=209+258-278=255-201=482-100×4=543×6-792=222+919-758=366-80-170=591-549-39=523+(959-759)=228+(592-251)=459-(213+173)=158-(271-118)=129×4=222+197-228=386×7-182=377+91×4=199+155=427-296=254-(87+131)=449-(130+134)=540+490-329=391-(149+125)=166×(506-497)=679×6-666=325+313×3=405-(45+303)=987-43×9=985-(810-624)=504+(822-519)=89-(139-51)=149+(423-38)=778-(867-648)=403-103=976-(307-52)=164+(474-17)=255+206-91=850-555-216=296-99=46+19×2=726+(932-389)=290×2=946-445-467=451-90-349=957-238+470=437-184=818+32+57=834×7=370-80×3=537-10×9=965-451-464=162+35+619=455×6=104+139+666=130+832-121=324+603+313=236+(355-293)=814-680+970=429+169+142=810-(141+514)=474-11×3=264-33×8=109×(80-74)=806+(903-814)=361-(202+70)=226+43×8=112+(420-270)=302+144-206=297-(215-213)=598-542+936=658×(288-282)=917-(905-392)=43+252=719×(568-559)=840-773+712=385×(128-120)=997+380-230=4/6+2/6=26×9-25=686+732+727=345+486=268+202-443=312+75+134=679×(737-729)=314×3=112×(330-323)=380×8=797-348=886+282+580=131+174+344=408-(226+164)=181×(127-122)=54×(170-166)=346+122=643+153=237-13×4=504×7-599=431-43×5=577-282+900=408-(664-485)=508×5-226=924+(231-108)=295+31-85=184×3+563=406×4-945=439-128=460-69+94=680+(821-259)=46×(381-374)=223×(76-73)=228×2+331=343+476=381×2=604-(682-329)=123×4-184=574-456+123=383×2-497=229-109×2=140+291=943-(225+707)=636-120=422+371=541-210×2=222×4-15=754+812+261=119+671-707=448+(369-201)=177×5=75+206=548-308-168=230-90×2=113×6-262=565-83×2=683+330×2=473+551+672=401+34-388=366+78-224=343×2+569=376-(455-180)=374-125=164+73=443×6-477=385-(148+46)=878+42+737=454-39×4=566×8-256=103×3-247=187+98-161=363-296+54=238×4=32×3=405-342+807=269×4=206-(459-391)=795-(275+304)=544×(250-245)=1/8+6/8=241+34-45=246+294=393-(178+24)=296×2=634+333+877=230+98×7=98×2=801×5-99=18+(486-243)=723-241=41+(384-128)=493-(182+304)=273+553-737=398-141+166=24×2+280=335-(262-142)=471-171-155=12×(174-168)=143×(210-205)=465-(437-211)=833-567-54=1/10+7/10=306-(23+227)=782×2=329-(261-42)=431+(973-226)=86+74+665=399-123+29=258+139-263=181-(362-272)=360-95×3=54+63=431×(64-56)=102×4+50=124+27+441=393-(468-438)=199-170-22=834-279-253=166-72×2=302-236+371=333+304+631=321-(426-358)=425+(296-244)=146-(492-474)=51×7+384=61×4-200=562-494=52×8+331=314-141+128=340+(279-38)=700+797-368=281+87=639-(180-83)=397-345+447=932+731+297=488×8=418-(110+197)=902-486+90=273+(402-322)=840-201+65=93×(240-232)=421+(627-411)=645-(379+248)=155×(391-386)=460-(77-23)=127×4=274+44×4=477-(434-242)=641+(46-37)=103-(77-57)=111×5+593=194-10×6=342-(168-85)=681-(45+604)=150×(456-453)=712+213=65×(139-133)=397-(344+21)=371-163×2=900-213-653=241-137+374=815-791=361-(334-76)=353+(660-460)=972-775-34=212-180=316-49-171=444-50×8=236-11×2=357-(774-723)=994×(530-524)=924-833+807=905-429=966-228+277=250+89=316+(444-41)=806-(242+458)=48+283-299=278+425=493-(392-245)=908-79×2=431×4-342=247-(425-296)=107-(298-223)=118×(117-112)=677-301+92=922-730+750=46+(984-613)=914-193-133=314+475=469-404+120=858-(617-10)=466-(69+29)=158-79=434+(365-250)=342-112×2=729×7=286-206=255+215-78=149+319-311=57×7+252=397-251-117=193+(453-208)=126×3-32=625-515=317-196-66=28×8=347×3=978-(638+235)=486-244=949-250-334=146+787+62=982-595=536-17-327=88×(388-379)=919-908=6/8-2/8=177-62=2/5-1/5=526-304+141=83-26+135=210×3+253=860×7=950+(648-349)=996-(370+430)=865-351=5/8-1/8=474×8-411=858-(290+180)=375-193=4/7+2/7=1/5+2/5=745+101-476=441-(83+159)=782-25-573=586×8=495-310=837-(228-122)=91+108=148×(187-184)=481-35-75=188×2=289+128=参考答案415+285=700425-249+499=675954×4=3816138+424×2=986621+205+168=994325+127=452153×(117-114)=459494-(81+254)=15988+500-250=338388+(474-305)=557219-25×3=144909-289-334=28671×(331-325)=426796-62×5=486263+(681-447)=497329+76-186=219985-539=446386-142×2=102203×7-995=426407×8-193=306363×(91-88)=189824×4-290=300697+(454-85)=466387×7-452=2257542+(581-517)=606260+230×2=720567-65=502431-44×6=167115×(118-111)=805499+906=1405287×9=2583211×2+947=1369456×9-983=3121665-(672-119)=112471+396-44=823987+87-737=33784×4+186=522388+215-159=444470-159-236=7584×(294-287)=58897+156=253641+625+596=1862758-(18+374)=366122×6-75=657108×7+792=1548125×8=1000764-45×8=404107×6=642572-100×3=272312+422×2=1156950×6=570074×5=370624-519+954=1059392+249=641349-(112+80)=157848×2-171=1525148+(327-28)=44752×7+337=701179×4+70=786976+883=1859710+48×3=854611-74×5=241134+(812-668)=278434+(493-147)=780629×(82-76)=3774404-216+410=598902+977+806=2685102×(362-357)=510355×4=1420345×2-507=183165×(743-737)=990483-173=310557+218-589=186920-(714+66)=140318×(905-900)=1590143+90+430=663453+(296-92)=657859-110×7=89137+254=391197-162=3573+(486-470)=89133-10=12385×5+220=645113×8+882=1786658×7-390=4216865-(983-568)=450635+(233-200)=6681/7+2/7=3/7121×4-174=310233-67-90=76228-18-106=104126×(205-199)=756180+45=22517×(141-136)=85713×4-548=2304295-(352-222)=165552×4=2208826-(742-682)=76648+141=189233+77=31063×4=25241×7=287493-209-104=180184-50+35=169174-116+176=234373-287-29=57303-138-118=47405-351+428=48288×(99-91)=704205-152+174=2271/8+4/8=5/841+483+403=927933+173+17=1123159+140×4=719955+(910-880)=985412×8-948=2348644-95+710=1259491+15+507=1013210+350×2=9102/3-1/3=1/3321+17-139=199253-163=90343×3-429=600271-262+145=154659+68×8=1203556+891-147=1300174×2-30=318139×(217-213)=55650×3+808=95888+505+34=627116×7-307=505345×2-88=602244-15×7=139776-39-376=361634-24-400=210480-366-60=54419-(259-54)=21496+487+135=718486+567=1053396+(387-292)=491149+300=449480+26×6=636550-372+298=476395-269+140=26694×7=65876+818+824=1718991-194-122=675403-(228+35)=14072×5+152=512456+55+699=1210634+55×2=744920-78-703=139934+313+608=185562×7+694=1128824-(23+231)=570121+928-282=767317+126=443213-137=76596+(578-424)=750178×2+236=592356-37-154=165477-(210-35)=302350-233-72=45387+127+957=1471126×4-237=267270+113=38352+19=71852-100-558=19417+157×2=331368×2=736574+353=927317-142+219=394407-47×8=3188+647+219=954534×(679-670)=4806381-(271+92)=18850+316=1166512-96×5=32216+(984-195)=100520+383-62=341198+284-218=264157×(383-377)=942915-90×9=105386-(215+97)=74136+(740-97)=779822-274×2=274640-51×8=232282-127×2=28475-(310-283)=448484-107-302=75258+701-205=7546/10+2/10=8/10491-204=287279+864=1143312+75×4=61229+322×3=99571-12=5974×5+417=78799+86=185955-95=860456-238+738=956225+387+153=765346-(108-32)=270209-189=20974-259+964=1679138-37×3=27101+186=2873/5-1/5=2/5146×3+391=829130+605+669=1404348×6=208879×6=474141+99-120=120805-(277+234)=294490×2-36=944194×4+763=1539462-88×4=110404+994=1398813+(735-402)=1146628×(565-556)=5652560×(516-510)=3360754-(399-280)=635292-109=183368-368+361=36143×(155-149)=258131+161-109=183607-(358-345)=594432+10×7=50223+145+642=810933-121-478=334295×3-669=216462-428=34189+336=525239×(984-978)=1434429-361+112=180319×2-170=468480-357=123800-(643+157)=0321-45×3=186745-250-486=9519-15×9=3842/4-1/4=1/4172×2-241=103151×(617-612)=755310-52-96=162408×(879-876)=1224281×3-504=339422-(59+69)=294756-223-174=359876-(28+405)=443470-50×9=20294+95=389414-(930-628)=112343-(121+47)=1755/8+3/8=1554-(123+23)=408175×6=1050194×3=582479-63×4=227402-169+167=400141+190-58=273235+22-241=16602-277+637=962188×(467-462)=940913×2=1826416-(214-132)=334713+(547-105)=1155965+901=1866420×(790-786)=1680163+(950-609)=5042/6+3/6=5/6753-(542+87)=124723-160=563894-(373+125)=396206-193+85=98117+(519-485)=151308-(421-262)=149376×8=3008453-(405+34)=14419-86=333306-11-247=48315+83+352=750986-(551-350)=785410+(442-28)=824493-330=163188-16=172275+219-365=129219-31×7=282-42=40163×2-93=233100+63-136=2726×(465-462)=7867+295-360=2255+(329-258)=326379-95=284408×5=2040883-(54+661)=168330-95×2=14084×(330-321)=756190-149+296=337528+164=69283×6-456=42978×5=4890382-(424-412)=370194×2+393=78184×6+218=722481-464=17836+880+943=2659450×8-664=2936857+32+59=948598×(129-121)=4784192+98-190=10088×3=26442×6=252221+879+52=1152243+281+195=719527+446-71=902717-595-48=74330+683+541=155472+169=241200×3=600181+208-277=112172+111=283146×6-262=614579+154+65=798562-52×7=198612-344-117=151131+98+113=342204×7-705=723275-80×2=115586+209=7953/6-1/6=2/6476×8=3808494+(312-296)=510480-64×2=352469-294=175628+403×2=1434560×4=2240450-(392-257)=315309×(116-113)=927736-720+760=776142×6=852501+42×2=58554+418+424=896994-(698+240)=56244-197=4739+(352-247)=144555+111=666970+276-708=538485-121=364747×2-263=1231523×5-217=2398612-(255-163)=52083×(210-201)=747582-546=36164×5-115=705455-(85+31)=339469-(271+152)=46439-282+49=20682×4=328928-745+941=1124378+129×3=765496-366-31=99940-231=709109×7=763293+193+36=522291+(488-87)=692316×(817-810)=2212783-(593+67)=123144×(102-98)=576487-(499-253)=241235×4=940975-320+53=7083/10+2/10=5/10377-(22+86)=269238×7-226=1440955+811-335=1431348+43+13=404825-170+733=1388387-(52+261)=74388-(847-763)=304449-136+170=483471-440+141=172462-(335-127)=254456×4=1824266+150=416472×2-468=476272×(44-41)=816451-28×2=39544+677-65=656837-211=626183-77-28=78522×8=4176250+585+76=911792-464-301=27372-233-12=127582+136×5=1262252-29+41=264586-(375-330)=541601-(132+444)=25104-66=38989-663+622=948378-260+204=322486+469-928=27839+(634-168)=1305131×4-330=19454-(334-308)=2875×3=225344-157×2=30850-73×7=339619-(85+444)=9024×8=192984-519-406=59878+313+971=2162116+327=4432/10+3/10=5/10706+835-687=854254-(10+80)=164337-119×2=9987+65=152461-126+93=428215-(40+77)=98399-221+179=357973-(681+160)=132351-72×4=6314×3=4249×2=98405-174-211=20629×(337-330)=4403899+832+859=2590403-361=42191-131+291=351596+150×6=1496436×2=872330-308=22920×(979-971)=7360876-(959-724)=6413/5-2/5=1/5890-(933-226)=183439+157=596653-(653-24)=24465+981-63=138384+327+300=711517-(995-862)=384910-398+460=972904×9-305=783113×6-18=60296+925-572=649334-(470-321)=185254+168=42257+329=38696×4+367=7513/4-1/4=2/4162-22×2=118479-205-122=152396+39+464=89991+334-80=3452/6-1/6=1/616+(150-26)=140643+189×4=1399150+507+123=780331+57=388610+(482-447)=645347+142+236=725210-40=170420+(493-149)=764439-21×9=250734-126=6085/10-4/10=1/10142-(212-143)=73121×5+177=782134×(425-418)=93861+36×4=205344+523+849=1716243-124-74=45790-(108+170)=512453-10-124=319313×2-582=44422-57-143=222111×5-68=487406-(359+24)=23577+369-419=527736-(294+264)=178810×(997-989)=6480423-291-122=10177+385+182=74470×9+581=1211156+(159-38)=277699-90×6=159335-38×3=221260-245+466=481799+385=1184426-137-190=99800-(39+618)=14345×6+177=447819-418-137=264227+454+254=935903-379×2=145177+87=264213+492+94=799862+83-540=405433×2-133=733210+584-743=51378+117=4953/10-2/10=1/10178+204=382824-(286+130)=408787+866-154=1499415-79×4=99599+250-599=250364-(19+210)=135580×2-971=189335+157×2=649160+(362-74)=44852+(479-53)=478299×(101-93)=239222+(394-356)=60773×(966-957)=695795+133-106=122491-33-329=129180+380×2=940137×6-196=62670-(392-377)=55833+129+58=1020432+(366-35)=763569-229=34036+247+602=885847-(432-191)=606440-202-78=160490-97-320=7387+(336-329)=94161+257-77=341760-87×6=238271×3=813504-210=294177+676-156=697482-(31+396)=55116+334+88=538756-528+832=1060368×5-471=1369378×2=75684+68×6=492338+156=494335-29×8=103328-100=228873-474=399209+258-278=189255-201=54482-100×4=82543×6-792=2466222+919-758=383366-80-170=116591-549-39=3523+(959-759)=723228+(592-251)=569459-(213+173)=73158-(271-118)=5129×4=516222+197-228=191386×7-182=2520377+91×4=741199+155=354427-296=131254-(87+131)=36449-(130+134)=185540+490-329=701391-(149+125)=117166×(506-497)=1494679×6-666=3408325+313×3=1264405-(45+303)=57987-43×9=600985-(810-624)=799504+(822-519)=80789-(139-51)=1149+(423-38)=534778-(867-648)=559403-103=300976-(307-52)=721164+(474-17)=621255+206-91=370850-555-216=79296-99=19746+19×2=84726+(932-389)=1269290×2=580946-445-467=34451-90-349=12957-238+470=1189437-184=253818+32+57=907834×7=5838370-80×3=130537-10×9=447965-451-464=50162+35+619=816455×6=2730104+139+666=909130+832-121=841324+603+313=1240236+(355-293)=298814-680+970=1104429+169+142=740810-(141+514)=155474-11×3=441264-33×8=0109×(80-74)=654806+(903-814)=895361-(202+70)=89226+43×8=570112+(420-270)=262302+144-206=240297-(215-213)=295598-542+936=992658×(288-282)=3948917-(905-392)=40443+252=295719×(568-559)=6471840-773+712=779385×(128-120)=3080997+380-230=11474/6+2/6=126×9-25=209686+732+727=2145345+486=831268+202-443=27312+75+134=521679×(737-729)=5432314×3=942112×(330-323)=784380×8=3040797-348=449886+282+580=1748131+174+344=649408-(226+164)=18181×(127-122)=90554×(170-166)=216346+122=468643+153=796237-13×4=185504×7-599=2929431-43×5=216577-282+900=1195408-(664-485)=229508×5-226=2314924+(231-108)=1047295+31-85=241184×3+563=1115406×4-945=679439-128=311460-69+94=485680+(821-259)=124246×(381-374)=322223×(76-73)=669228×2+331=787343+476=819381×2=762604-(682-329)=251123×4-184=308574-456+123=241383×2-497=269229-109×2=11140+291=431943-(225+707)=11636-120=516422+371=793541-210×2=121222×4-15=873754+812+261=1827119+671-707=83448+(369-201)=616177×5=88575+206=281548-308-168=72230-90×2=50113×6-262=416565-83×2=399683+330×2=1343473+551+672=1696401+34-388=47366+78-224=220343×2+569=1255376-(455-180)=101374-125=249164+73=237443×6-477=2181385-(148+46)=191878+42+737=1657454-39×4=298566×8-256=4272103×3-247=62187+98-161=124363-296+54=121238×4=95232×3=96405-342+807=870269×4=1076206-(459-391)=138795-(275+304)=216544×(250-245)=27201/8+6/8=7/8241+34-45=230246+294=540393-(178+24)=191296×2=592634+333+877=1844230+98×7=91698×2=196801×5-99=390618+(486-243)=261723-241=48241+(384-128)=297493-(18