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470-129-335=417-252+224=113×8+308=522-(667-340)=354+484-605=271+(960-698)=462-(117+52)=213-136=93-76=834-(600+58)=74×9-85=380+(435-130)=431-(308-237)=383×(507-502)=814-(420-143)=516-(167+212)=174×5+318=3/5-2/5=12+433-329=105×9-476=363-(54+63)=567-513=454-(413-85)=95+11×8=430-44×6=710+163-186=426-50-347=387-166-175=862+755=650+308×2=217×2=298+52-314=184+76=971+(991-477)=123×8-428=148×(132-128)=61×(62-53)=39+37×4=118×3-20=89+10+901=306×3+667=731-193-142=730+315-944=726-164×4=10+279+419=732-62+144=230×2=491-226=965-25-462=634+485+991=589+14+123=139×5+764=92+305=187-25×6=472+(448-214)=261-92=354-51=338×(334-328)=953-(672-129)=75×(272-265)=880-314-548=103×(324-316)=279×3-460=473-128=269-80=56×3+461=415×2+571=3/8-2/8=308+95-332=609+(838-744)=341-78=610×3-952=224+139-281=469-65-185=437×3-284=166-88+91=973+398+326=115+151×4=63+78-84=298-19×8=301+845-609=217-13×6=212+23+102=625×3-382=466-309=263+(304-299)=582+44+54=153×6=13×8=45+177=2/4-1/4=325-270+207=100×8-654=35×8-277=159+678+60=386×4-180=998-(886+13)=314+(346-330)=649-480+838=346-81-220=329×7=219+230×4=136×7=650+20×2=316×(73-66)=182-(244-171)=76×2+208=181+(338-222)=756-358-296=245-(441-380)=302+(361-331)=413×7=128+205+303=702-143-57=456+441=663+(877-262)=270+(291-83)=295+783-279=545+52×2=646×4-811=337-204+322=453+(256-187)=108×7-674=119×2+840=555-43×2=960-147×6=359+126-113=917+684=985-292=905-(584+248)=748-463+467=733-278=749+858+543=419+285+648=314-(526-464)=900×4=147×(100-97)=45+(137-125)=582-125×3=115×2+484=416-406=472×2-201=441-(311+108)=875-540=850+810+145=641-91×7=124+221+213=967+(628-510)=265×(88-85)=187×(456-451)=122×(173-169)=423-243-113=992+492=952-436-334=116×3+439=350-17×9=230+249-119=181+(91-82)=735+22+640=222-(51-28)=897-(347-66)=158×2-83=784-(356+204)=697×2=379-111=487-486+43=729-590-132=204-11×2=321+(972-292)=129-85+550=400-29-313=66+696+936=163×4=57×2=2/8+3/8=113×4-202=923-76×6=80×7+359=1/9+6/9=983+675-540=190-38×3=422-72×5=244+(963-951)=429-(398-252)=373-365+70=12+359-216=296-12=448×2+809=534-66=519+347+236=136×(67-60)=245+98-296=377+98=134-(299-208)=383+101=229-(274-46)=465-285+23=215+670=121+267-138=423×5-312=405-(244-69)=61×7+300=11+226-71=482×2-367=909-101×6=58×3-57=191×4=20+(309-306)=93+421=72+350=371-125-141=407+32×9=28-19+276=957-781=2/8+5/8=475-271=585×3=62×2+749=326+851-750=271×(499-493)=943+(514-74)=262×2-42=331+(380-126)=372-(210+149)=137×4=378-189-25=343+132=290+113=212-(48+39)=238×7=441×2-197=817-(390+128)=84×(249-243)=239×5=107-19-36=441+14-381=647×3=320×3-194=242+513+74=267+(948-479)=635-257+83=442+(378-141)=4/7-1/7=3/4-1/4=481-259+259=122+(272-223)=409+904-92=187×3=442-(187+109)=37×(391-382)=308+218=411-89×4=590×(795-791)=832×7-451=277-28=677-59×4=3/5-1/5=429-(405-137)=371-(313-98)=772-(429-57)=80×6=244+838-265=314-277+269=135+72-125=61×3=461+(377-150)=976-721=274-142+271=98+180=493-(236-156)=280×(938-930)=695-415=803+32×6=286×6-983=504+995=348-56+260=307+272+154=119+225=2/5-1/5=867-(254-17)=890+(815-134)=204+(297-116)=140+443+178=451+839=113+900-130=106×4=907-210+54=175+125×5=93×6-483=78×2-40=435×(494-489)=313+(223-206)=491-(68+24)=842-(836-396)=63×7=143×4=97×6=144+(201-176)=25+748-462=399-393+121=845-(420+11)=724-594+725=152+(584-51)=57+440-238=559×(170-162)=875+921+896=55×6+40=428-23-252=370-169×2=375-21×4=573-(341+200)=140-(26+22)=262+547+109=160×3+401=105+543=329-(63+139)=495-147-60=529+463+676=233+29×6=40×3+337=59×(328-325)=380+116=77×9=440-(208+197)=450-31×6=337-120×2=369-344+396=343-(311-269)=259-(294-292)=165×(277-274)=334+94-393=496-191-196=678×6-137=29+626+976=694-151=52×3=291+347+68=567×(529-524)=498-(213+164)=101×5+184=356-(171-32)=931+(479-117)=448+44+629=62×4-79=335-(783-583)=465-60-198=193+23+457=145+94=356-71×3=739-48+798=989-163-767=470+56×3=409-(282-220)=242×2-34=394+280=419+162+382=499-326=150×3=345+65-22=922-(819-484)=4/7-2/7=375+125+294=498-205+116=656+52-30=7/9+2/9=494-(49+108)=796-361-203=600-(86+336)=307×(73-70)=477-93=374-243=191+367+549=486×3=420-37-140=157+339+243=663+181×4=293×(390-387)=16+45=339-(214-23)=950-672=94×5+444=228-(266-151)=357-(255-177)=942×(702-694)=248+85=110-97+468=412-(962-631)=82+248=18+47×5=622+929-64=250-195=149+370+345=26+79=394-(316-166)=937-(211+571)=316-(79-43)=265-163=908×7=149×8=27+84=267-211+256=936+752-718=133×(477-471)=599+(707-586)=390-205=128×5=920-97×2=145×(20-11)=806+569-24=856-169-266=561+71×4=322-270+175=374-22-17=190-(414-308)=503×4=687-(576-363)=464-25×5=894-139×2=495+(914-242)=686+(824-563)=30+356+302=504-285=344+62=375+735-371=926×3=80×8-506=533-469=65×4=174×(333-329)=647-(770-562)=320-(82+158)=391-271+880=826+432=448-15×9=24+27+218=476-(65+375)=371×(699-692)=112+(463-286)=183×(44-41)=437-383+401=256+170-425=375-22+107=286+(391-240)=195×(53-50)=658×5-732=601×(254-250)=772+463+96=244+63×7=264-178=163×3+55=429-251-68=442-227=451-29-137=844+39+76=301+227+158=780-262-125=241+922-726=479-(145+102)=615×6-365=739+(169-67)=87×8=233+193-266=354+689-397=108×6-275=149-27×2=76×4=437-22-69=368+124=103+(118-95)=544-201+341=344+89-135=683-131×4=947+450-928=635-70×9=25×(333-326)=397-310+188=100×4=186+72=13+40=958-(10+739)=521×8-957=143-16+337=72+347-131=618+325=109×6=5/8+2/8=121+219-50=647-(356-192)=173-(51+18)=393+(267-170)=388-(43+69)=245+197=1/6+4/6=733-(138+62)=364+70-119=315×3-514=369-203-22=544×4-24=661-467=316-(249-245)=305-49×3=167+394+403=850-168+496=977-(246+462)=139+274=699-160×2=123-47+321=751×7-963=267-10×8=99+518+372=198+(344-221)=176+(980-815)=404+21-148=72×9-529=429-(968-609)=232-(281-193)=350-(367-236)=812×4-686=59×(346-339)=397-171-125=316+651=449-27=322+88=536-127×4=916-(395+26)=420-326-51=858-83+905=448×2-643=336×7-57=116+334=782-346+458=229-162+133=227×2=43+162×5=362-287=780×8=50×8+860=602-305+151=379-215+291=310-203-87=273-107×2=912+757-105=460-58×2=169×3=737+194×2=234-11×3=480×2-392=890+828+433=145×5=237+73=235+(412-218)=349-(84+154)=172+611=810×(186-179)=386+93=437-41×3=23×3=476+847+790=147+185=375-(103+103)=367+310+100=452+(454-205)=935-213+323=476-(440-290)=523×4-224=689+871+504=397-(39+19)=575+141=447-400=947-202×4=104×(297-288)=236×(56-52)=218-11×7=324-172+126=464+22-158=367+983=257-109×2=313+(774-372)=887+(830-610)=140×7=85×(174-165)=460-(341+26)=393+69+609=367+(409-308)=805-85×3=103+47×7=69+135=954-64-288=565+766=397+229-466=390-179-171=757×4-225=973-690=407-89×2=43+450-175=939+(752-293)=54-(441-395)=341×2=354-119-10=917-90-206=862-(602+187)=68×7+192=234+336×2=169×2+442=965-242×3=454-386=5/7-2/7=596-(915-418)=543-(233+177)=846-522+140=484-257+47=725+812-691=793-(416+184)=444-(146+21)=953×2=901-(274+405)=323+(462-328)=210+101=414+(330-204)=358-211+256=84×9+688=98×(227-223)=358-(63+105)=450-(244+42)=339+(202-146)=311-(127+159)=278-(28+186)=840-23-114=766-402+701=969-130+286=105+521-309=92+702+516=809-399=862×6=313×9=1/4+2/4=453-(404-347)=322-163-66=275×9=789×5=658+666+345=305+407=855+(884-237)=512×(282-276)=554-285+614=210+270-336=502+(775-551)=720-(128+172)=103×7+577=417+(357-254)=475-70=230-15=911-120-353=266-44×5=134×(273-269)=868-36-660=562+109×5=521×(615-607)=191+265-331=517×(493-487)=323-(448-425)=473-193=88×9-229=312×3-823=230-(470-350)=106-(158-132)=1/5+3/5=14×(252-248)=928×(184-180)=514+191=871-(586-385)=173×4+284=432-392-30=929-612-223=313-(254+56)=143-(897-894)=216+89×2=315+29-188=385-(167+118)=176-101-36=389×6-910=832×7-659=870-185-375=398-60×6=674-(692-307)=438×9-507=31+102+648=354+78-27=747+177×3=739-592-76=402-(382-238)=489+886=738-315=672+189-537=493-46×3=351×2-474=971×(801-792)=689-(828-248)=915-820+796=681+209×2=599-90=346×5=623-349+144=498-(235+60)=423-106=671×(861-853)=154-67=239+(932-114)=423-20=511-39×5=991-322×2=209-159+111=962-580+229=778×(75-66)=36×(820-815)=458-174-252=181×8=908+(446-27)=189+193=881+42+523=636×2-367=301-239=912-405=420+120×7=447×2+51=346+72=848-(306+176)=660-244-307=3/5+2/5=4/6-1/6=985-499-381=317+365+55=968-543+537=292×(411-408)=432+367-259=75×2-28=600-(195+273)=375-(500-284)=638×7-701=472-100×2=77+76×6=287×3=486-86-317=868+529+570=660+197=312-181=222×7=165×6-520=130-(397-278)=509+428+876=397+30+463=194×5-179=477-416=431+753+117=788-762=2/7-1/7=664-423-144=944-94×4=210+287-323=826-244-379=300-63=749-(405+319)=146×(146-141)=153+243=647-(325+234)=410+85-421=343-(502-454)=393-148+76=283-(46-13)=345-218=155×6=3/7-2/7=990-(540+441)=131+(283-112)=633-528+943=896-(914-142)=971-502=196+100=146×(102-97)=290-(828-617)=987×3=165×(915-912)=822+213=232-(692-517)=485-177-127=146+149=332+738-700=353×2+83=936-910=402-(57+182)=338-82×4=553-199+816=223+50×9=890-870+435=124+(822-292)=281+315+302=214+855-626=770-54×4=69×9-262=827-551+855=908+(598-44)=58+483+601=200×(458-450)=927-237-644=218+520+75=702+295+82=109+120=220-15×3=158-(15+90)=38×(315-307)=17×(746-740)=513+917+983=19+511+375=338+195+142=978+280=6/9+2/9=537×(558-549)=398×(387-383)=480-445+258=201-132-35=473-199+26=119+379-495=256-39×4=774×4-618=390-24×2=395-21×9=569-(52+332)=487-21-313=768-(235+226)=454-(62+272)=476-368-97=99×7+286=185×(852-849)=565-557+794=27×(257-250)=4/7+2/7=291×5-152=898+472×2=827-177×4=238-135=210×3+263=335-229=5/8+3/8=600×4-524=468+39×5=638×7-360=447×5=781-(833-543)=151+76+580=447-(175+126)=76×7=377×3=358-127-16=374-55×4=255-21×4=155×2=433-117×2=284+(924-766)=405+53-202=990+(452-250)=301-(108+52)=438-30-56=626+83×4=326+(650-316)=参考答案470-129-335=6417-252+224=389113×8+308=1212522-(667-340)=195354+484-605=233271+(960-698)=533462-(117+52)=293213-136=7793-76=17834-(600+58)=17674×9-85=581380+(435-130)=685431-(308-237)=360383×(507-502)=1915814-(420-143)=537516-(167+212)=137174×5+318=11883/5-2/5=1/512+433-329=116105×9-476=469363-(54+63)=246567-513=54454-(413-85)=12695+11×8=183430-44×6=166710+163-186=687426-50-347=29387-166-175=46862+755=1617650+308×2=1266217×2=434298+52-314=36184+76=260971+(991-477)=1485123×8-428=556148×(132-128)=59261×(62-53)=54939+37×4=187118×3-20=33489+10+901=1000306×3+667=1585731-193-142=396730+315-944=101726-164×4=7010+279+419=708732-62+144=814230×2=460491-226=265965-25-462=478634+485+991=2110589+14+123=726139×5+764=145992+305=397187-25×6=37472+(448-214)=706261-92=169354-51=303338×(334-328)=2028953-(672-129)=41075×(272-265)=525880-314-548=18103×(324-316)=824279×3-460=377473-128=345269-80=18956×3+461=629415×2+571=14013/8-2/8=1/8308+95-332=71609+(838-744)=703341-78=263610×3-952=878224+139-281=82469-65-185=219437×3-284=1027166-88+91=169973+398+326=1697115+151×4=71963+78-84=57298-19×8=146301+845-609=537217-13×6=139212+23+102=337625×3-382=1493466-309=157263+(304-299)=268582+44+54=680153×6=91813×8=10445+177=2222/4-1/4=1/4325-270+207=262100×8-654=14635×8-277=3159+678+60=897386×4-180=1364998-(886+13)=99314+(346-330)=330649-480+838=1007346-81-220=45329×7=2303219+230×4=1139136×7=952650+20×2=690316×(73-66)=2212182-(244-171)=10976×2+208=360181+(338-222)=297756-358-296=102245-(441-380)=184302+(361-331)=332413×7=2891128+205+303=636702-143-57=502456+441=897663+(877-262)=1278270+(291-83)=478295+783-279=799545+52×2=649646×4-811=1773337-204+322=455453+(256-187)=522108×7-674=82119×2+840=1078555-43×2=469960-147×6=78359+126-113=372917+684=1601985-292=693905-(584+248)=73748-463+467=752733-278=455749+858+543=2150419+285+648=1352314-(526-464)=252900×4=3600147×(100-97)=44145+(137-125)=57582-125×3=207115×2+484=714416-406=10472×2-201=743441-(311+108)=22875-540=335850+810+145=1805641-91×7=4124+221+213=558967+(628-510)=1085265×(88-85)=795187×(456-451)=935122×(173-169)=488423-243-113=67992+492=1484952-436-334=182116×3+439=787350-17×9=197230+249-119=360181+(91-82)=190735+22+640=1397222-(51-28)=199897-(347-66)=616158×2-83=233784-(356+204)=224697×2=1394379-111=268487-486+43=44729-590-132=7204-11×2=182321+(972-292)=1001129-85+550=594400-29-313=5866+696+936=1698163×4=65257×2=1142/8+3/8=5/8113×4-202=250923-76×6=46780×7+359=9191/9+6/9=7/9983+675-540=1118190-38×3=76422-72×5=62244+(963-951)=256429-(398-252)=283373-365+70=7812+359-216=155296-12=284448×2+809=1705534-66=468519+347+236=1102136×(67-60)=952245+98-296=47377+98=475134-(299-208)=43383+101=484229-(274-46)=1465-285+23=203215+670=885121+267-138=250423×5-312=1803405-(244-69)=23061×7+300=72711+226-71=166482×2-367=597909-101×6=30358×3-57=117191×4=76420+(309-306)=2393+421=51472+350=422371-125-141=105407+32×9=69528-19+276=285957-781=1762/8+5/8=7/8475-271=204585×3=175562×2+749=873326+851-750=427271×(499-493)=1626943+(514-74)=1383262×2-42=482331+(380-126)=585372-(210+149)=13137×4=548378-189-25=164343+132=475290+113=403212-(48+39)=125238×7=1666441×2-197=685817-(390+128)=29984×(249-243)=504239×5=1195107-19-36=52441+14-381=74647×3=1941320×3-194=766242+513+74=829267+(948-479)=736635-257+83=461442+(378-141)=6794/7-1/7=3/73/4-1/4=2/4481-259+259=481122+(272-223)=171409+904-92=1221187×3=561442-(187+109)=14637×(391-382)=333308+218=526411-89×4=55590×(795-791)=2360832×7-451=5373277-28=249677-59×4=4413/5-1/5=2/5429-(405-137)=161371-(313-98)=156772-(429-57)=40080×6=480244+838-265=817314-277+269=306135+72-125=8261×3=183461+(377-150)=688976-721=255274-142+271=40398+180=278493-(236-156)=413280×(938-930)=2240695-415=280803+32×6=995286×6-983=733504+995=1499348-56+260=552307+272+154=733119+225=3442/5-1/5=1/5867-(254-17)=630890+(815-134)=1571204+(297-116)=385140+443+178=761451+839=1290113+900-130=883106×4=424907-210+54=751175+125×5=80093×6-483=7578×2-40=116435×(494-489)=2175313+(223-206)=330491-(68+24)=399842-(836-396)=40263×7=441143×4=57297×6=582144+(201-176)=16925+748-462=311399-393+121=127845-(420+11)=414724-594+725=855152+(584-51)=68557+440-238=259559×(170-162)=4472875+921+896=269255×6+40=370428-23-252=153370-169×2=32375-21×4=291573-(341+200)=32140-(26+22)=92262+547+109=918160×3+401=881105+543=648329-(63+139)=127495-147-60=288529+463+676=1668233+29×6=40740×3+337=45759×(328-325)=177380+116=49677×9=693440-(208+197)=35450-31×6=264337-120×2=97369-344+396=421343-(311-269)=301259-(294-292)=257165×(277-274)=495334+94-393=35496-191-196=109678×6-137=393129+626+976=1631694-151=54352×3=156291+347+68=706567×(529-524)=2835498-(213+164)=121101×5+184=689356-(171-32)=217931+(479-117)=1293448+44+629=112162×4-79=169335-(783-583)=135465-60-198=207193+23+457=673145+94=239356-71×3=143739-48+798=1489989-163-767=59470+56×3=638409-(282-220)=347242×2-34=450394+280=674419+162+382=963499-326=173150×3=450345+65-22=388922-(819-484)=5874/7-2/7=2/7375+125+294=794498-205+116=409656+52-30=6787/9+2/9=1494-(49+108)=337796-361-203=232600-(86+336)=178307×(73-70)=921477-93=384374-243=131191+367+549=1107486×3=1458420-37-140=243157+339+243=739663+181×4=1387293×(390-387)=87916+45=61339-(214-23)=148950-672=27894×5+444=914228-(266-151)=113357-(255-177)=279942×(702-694)=7536248+85=333110-97+468=481412-(962-631)=8182+248=33018+47×5=253622+929-64=1487250-195=55149+370+345=86426+79=105394-(316-166)=244937-(211+571)=155316-(79-43)=280265-163=102908×7=6356149×8=119227+84=111267-211+256=312936+752-718=970133×(477-471)=798599+(707-586)=720390-205=185128×5=640920-97×2=726145×(20-11)=1305806+569-24=1351856-169-266=421561+71×4=845322-270+175=227374-22-17=335190-(414-308)=84503×4=2012687-(576-363)=474464-25×5=339894-139×2=616495+(914-242)=1167686+(824-563)=94730+356+302=688504-285=219344+62=406375+735-371=739926×3=277880×8-506=134533-469=6465×4=260174×(333-329)=696647-(770-562)=439320-(82+158)=80391-271+880=1000826+432=1258448-15×9=31324+27+218=269476-(65+375)=36371×(699-692)=2597112+(463-286)=289183×(44-41)=549437-383+401=455256+170-425=1375-22+107=460286+(391-240)=437195×(53-50)=585658×5-732=2558601×(254-250)=2404772+463+96=1331244+63×7=685264-178=86163×3+55=544429-251-68=110442-227=215451-29-137=285844+39+76=959301+227+158=686780-262-125=393241+922-726=437479-(145+102)=232615×6-365=3325739+(169-67)=84187×8=696233+193-266=160354+689-397=646108×6-275=373149-27×2=9576×4=304437-22-69=346368+124=492103+(118-95)=126544-201+341=684344+89-135=298683-131×4=159947+450-928=469635-70×9=525×(333-326)=175397-310+188=275100×4=400186+72=25813+40=53958-(10+739)=209521×8-957=3211143-16+337=46472+347-131=288618+325=943109×6=6545/8+2/8=7/8121+219-50=290647-(356-192)=483173-(51+18)=104393+(267-170)=490388-(43+69)=276245+197=4421/6+4/6=5/6733-(138+62)=533364+70-119=315315×3-514=431369-203-22=144544×4-24=2152661-467=194316-(249-245)=312305-49×3=158167+394+403=964850-168+496=1178977-(246+462)=269139+274=413699-160×2=379123-47+321=397751×7-963=4294267-10×8=18799+518+372=989198+(344-221)=321176+(980-815)=341404+21-148=27772×9-529=119429-(968-609)=70232-(281-193)=144350-(367-236)=219812×4-686=256259×(346-339)=413397-171-125=101316+651=967449-27=422322+88=410536-127×4=28916-(395+26)=495420-326-51=43858-83+905=1680448×2-643=253336×7-57=2295116+334=450782-346+458=894229-162+133=200227×2=45443+162×5=853362-287=75780×8=624050×8+860=1260602-305+151=448379-215+291=455310-203-87=20273-107×2=59912+757-105=1564460-58×2=344169×3=507737+194×2=1125234-11×3=201480×2-392=568890+828+433=2151145×5=725237+73=310235+(412-218)=429349-(84+154)=111172+611=783810×(186-179)=5670386+93=479437-41×3=31423×3=69476+847+790=2113147+185=332375-(103+103)=169367+310+100=777452+(454-205)=701935-213+323=1045476-(440-290)=326523×4-224=1868689+871+504=2064397-(39+19)=339575+141=716447-400=47947-202×4=139104×(297-288)=936236×(56-52)=944218-11×7=141324-172+126=278464+22-158=328367+983=1350257-109×2=39313+(774-372)=715887+(830-610)=1107140×7=98085×(174-165)=765460-(341+26)=93393+69+609=1071367+(409-308)=468805-85×3=550103+47×7=43269+135=204954-64-288=602565+766=1331397+229-466=160390-179-171=40757×4-225=2803973-690=283407-89×2=22943+450-175=318939+(752-293)=139854-(441-395)=8341×2=682354-119-10=225917-90-206=621862-(602+187)=7368×7+192=668234+336×2=906169×2+442=780965-242×3=239454-386=685/7-2/7=3/7596-(915-418)=99543-(233+177)=133846-522+140=464484-257+47=274725+812-691=846793-(416+184)=193444-(146+21)=277953×2=1906901-(274+405)=222323+(462-328)=457210+101=311414+(330-204)=540358-211+256=40384×9+688=144498×(227-223)=392358-(63+105)=190450-(244+42)=164339+(202-146)=395311-(127+159)=25278-(28+186)=64840-23-114=703766-402+701=1065969-130+286=1125105+521-309=31792+702+516=1310809-399=410862×6=5172313×9=28171/4+2/4=3/4453-(404-347)=396322-163-66=93275×9=2475789×5=3945658+666+345=1669305+407=712855+(884-237)=1502512×(282-276)=3072554-285+614=883210+270-336=144502+(775-551)=726720-(128+172)=420103×7+577=1298417+(357-254)=520475-70=405230-15=215911-120-353=438266-44×5=46134×(273-269)=536868-36-660=172562+109×5=1107521×(615-607)=4168191+265-331=125517×(493-487)=3102323-(448-425)=300473-193=28088×9-229=563312×3-823=113230-(470-350)=110106-(158-132)=801/5+3/5=4/514×(252-248)=56928×(184-180)=3712514+191=705871-(586-385)=670173×4+284=976432-392-30=10929-612-223=94313-(254+56)=3143-(897-894)=140216+89×2=394315+29-188=156385-(167+118)=100176-101-36=39389×6-910=1424832×7-659=5165870-185-375=310398-60×6=38674-(692-307)=289438×9-507=343531+102+648=781354+78-27=405747+177×3=1278739-592-76=71402-(382-238)=258489+886=1375738-315=423672+189-537=324493-46×3=355351×2-474=228971×(801-792)=8739689-(828-248)=109915-820+796=891681+209×2=1099599-90=509346×5=1730623-349+144=418498-(235+60)=203423-106=317671×(861-853)=5368154-67=87239+(932-114)=1057423-20=403511-39×5=316991-322×2=