三年級(jí)數(shù)學(xué)(上)計(jì)算題專項(xiàng)練習(xí)附答案集錦163×(285-280)=643-358=833-(241+111)=68+396-211=201-152+151=86-(129-104)=218+86=124-14+269=41+(851-360)=118+229=140+(515-431)=297×2-98=412-97-150=978-97=994+370+175=452-34×3=168+346+158=979-159×2=236×(189-186)=137+310-422=358-48×5=452+(731-38)=4/8-2/8=934-(769-249)=38×8=439-32×4=73×2+725=858-(415+189)=547+14+140=367-(122+61)=94+217=444-(324-54)=587+233-261=905+(236-20)=925-247-93=158+220-177=237+382-395=121×5=593-(877-377)=3/8-1/8=293×2-316=34×7-69=327-(211+60)=316-(470-218)=846-169-645=809+31×5=354-(868-577)=14+209-162=822-(274+505)=626-270-327=645×2-497=96×9+21=24×5=663+647+430=94×6-296=124+92=91+331=98×7+312=636-103+49=306+(284-267)=64×(393-388)=300-94-199=74×7-341=376+286+554=431-(411-286)=612×8-663=782×4-274=381-(455-179)=308-231-29=818+61×4=256×4=935-(752-656)=7/10-2/10=182-149=322-140=752-(532-428)=165+289=810-436=261+127=184+237=196-98=295-136+866=300-16×4=486×8-726=953+44+883=968-(97+216)=299×2+67=532×7=136×(134-131)=321-(286+34)=96×(471-463)=61+342+117=59+162=313-(176+53)=969-689-13=970×2=122×(399-392)=514-93=671-385+28=118×(235-228)=583-485=492-121-268=477-32×4=476×4-793=11+458-109=786+26×7=494-308=600+974-585=485+660+268=252-119-113=296-(901-888)=481-179-131=338×2=150+77+554=395+(179-97)=187-(537-471)=330-(418-338)=112+(336-14)=110-27=806+760-637=424-422+252=496-114-173=974-(639+225)=676+(909-768)=250-152=383×6-365=468-34=421-34×9=376-120-81=190-17×8=281×2=340×4-814=232+247=413-28×9=888-(474+302)=925-56-361=231+(400-72)=600×7=867-731=28+147×4=670-(403+174)=836×5-233=178×3-271=768-77×6=47×(441-432)=484-197+203=11+50+203=621-202+268=92×(246-240)=443×2=810-623=47×4+125=4/7+2/7=202+123-209=372-34+157=694×(566-559)=32×6+409=408-(325-148)=510×5-961=196+245-30=454+(291-160)=200-40×3=446-105×4=185+306-128=899×9=99×(285-277)=155×6-383=498-114-59=151+(455-324)=234-126=152+78=232+45=861-(609-151)=511×9=360-(17+157)=46×6+841=13×(420-413)=102×(74-67)=5/7-2/7=895+593+164=231-(264-262)=421×6-528=142+131×6=188×3=434+(422-178)=53+(205-63)=230×2=405-47×7=220×4-794=340-17-240=882+755=336-(16+235)=42×(959-953)=152+295-229=841-59×4=378-(367-258)=700×8=686+875=474-(320-310)=372-249=249×(579-575)=590×(785-779)=166-(106-41)=161+264-317=975-387=220-80+186=98+105+483=366-91×2=827-665+153=36×4=570×6=703-(474+169)=681×4-281=880×(464-459)=894-805=685-297+642=196-111+307=388-351+596=360×2-300=22+(921-240)=156+751-250=457×2-96=60+129+139=3/5-1/5=38×5=151×(147-143)=389-(17+324)=140-133+165=814-285=774-678+986=626×(557-553)=199×(351-347)=118-67-41=259+188×5=344×2-419=887×(421-415)=237+63=228-150+64=634-24-109=1/8+4/8=452-(99+273)=251-18×3=352+217+452=373-242+109=491-74+25=556-83×2=902-46×9=233-56×2=185+(498-441)=17×7+325=153×4+179=703-677+674=102+334=98×(344-340)=57+223×3=781×(148-144)=220+363+53=459-44×8=99×(108-99)=624-304=795×(868-860)=864-848+898=70+(362-296)=780-(636-66)=301+62+615=311-44×4=483-10×5=121×7=61×(321-312)=339+61-309=436-(117-21)=264-12-39=234-(135+24)=813-546=130×2+94=207-(292-97)=195+112+132=850-656=95+311-287=799×8-268=97×3=158×2+228=205+908-428=185×4-608=290+(234-220)=418-(154+242)=448-233-28=91+172=422×2=371-66-106=158×3-53=233-(250-47)=951-345-533=527×(430-427)=512×9-944=378-71×5=465-(281+105)=137×(149-142)=462×5=146+462=585-277×2=166+115=444-296+116=49+(134-102)=1/6+4/6=84-73+61=631-391-103=318-(121+86)=175×4=647-295=479-(269+25)=715-(457+55)=268+(573-520)=415-48-106=338-(172+12)=988-481=396-345=490+145+175=977-808+480=77+503-299=491-27×3=200+183-52=115+154=466-392=315+322=371×7-652=746-641-96=337-(178+92)=96×3=324-(258-19)=455-376=644+873=63×9+185=199×4=288×(166-159)=814+(105-61)=352-25=287-(96-95)=344-163×2=723+541-309=865-108×4=469+41×3=426-129×2=293+294=54×(425-422)=21+281×3=35+141=326-33=607×(772-766)=73+918-887=940×9=464+(360-221)=231×7-425=456+54+622=270+70=720+93+69=5/10-4/10=785-137-511=178×2=21+34=322-276+319=488-290+38=479+11-398=31×(362-358)=20×3+461=807+731+702=497+278+100=408-(73+81)=212+281+304=106+42=35×(282-273)=175×5-530=847+291+113=400×9=46+260+854=172+208=702+880=614+(794-212)=408×2+85=37×6-96=125+(785-783)=180+(361-183)=315-215+272=1/9+4/9=571-75-341=798-(172+432)=419×6-64=610-(724-197)=264-(430-425)=478-195+143=939-132×4=83+82×7=333-101-156=100+194-144=985+(231-91)=256×3-546=300×2=436+(479-252)=638-(806-280)=329+(234-206)=895-20×7=454-89×3=483-361+116=473+(480-169)=414×3=287×2+131=116+155=572-(73+358)=136×6-43=78+707-43=354+480-662=456-(10+269)=471×4-129=764+(987-557)=445-(289-249)=266×6-68=2/4-1/4=231+65=439-123=606-193×2=102+192=15+(409-159)=154+(359-88)=791-415-233=280-(990-919)=280-(10+144)=667-(464+61)=441-272+187=126×7-497=2/3-1/3=105×(29-22)=729-112-440=393-314=10×(385-379)=67+363-79=279-173=956+477=364-46=660×(94-90)=630+948+692=865-235+488=415-(133+85)=206-154+427=603×(559-551)=133+(312-244)=460-185+140=129+172×4=447-(274-64)=845-568=71+908+837=535-(818-409)=878-543+979=476-(382+49)=306-155-99=974-184×5=154×6-243=71×(199-196)=92×8-283=381-10×8=375-(450-213)=381-176=28×5+271=53+452+637=492+(974-696)=949-(101+181)=451-405+107=336+(93-55)=537-103×5=405×9=780-65-240=304+67=499-166-78=514-(377-51)=98×6+431=530+420=692+(690-334)=825+157+668=424-(421-14)=768-705=908-645+580=82×(436-428)=855-40×4=805×4-420=34×(340-334)=321-16+484=6/9+2/9=352+103=802-(808-463)=62+53=327+887+652=330+87=418-(70+296)=134×2+88=421+(656-522)=15+59-10=389×7-630=155×2-266=414-(141+192)=549-468+655=437+456-327=492-180=272-23×5=941-262×3=388-111×3=443-(313+117)=422+336+71=500×2-382=22+234-204=589-(529-14)=570+(850-267)=37×7+488=905+948=180-(531-384)=423-74-179=356-(137-48)=27×2+264=475-201-58=447-229+245=221-(690-620)=565-109=383×8=266+(351-187)=260+139=501-288-79=187+804=585+174×3=104×(283-279)=387+27-235=716×9=1/6+2/6=463+(485-412)=532+571-870=384-(34+164)=383-21×7=499+174+93=785-727+686=379-343=341-181=497-(405-127)=640+916=350-319=180+102=12×(460-454)=2/6-1/6=233-62×3=154+208-233=141×(481-475)=302+(579-200)=829-651=442-166-132=65×(169-160)=335+130=52+(413-321)=213+(594-283)=478-49×6=132+72=426-(118+251)=749-189-172=311-287+409=68×(109-105)=51+96×4=968-833-89=179-23-43=850-(424-375)=284+461×2=15+159+596=77×(298-291)=695-332-191=135+145-269=316×(123-117)=402-118×3=267-(442-194)=86+(199-180)=207+50+655=72×(197-191)=11+369+54=967-132×6=753+549-456=655-126=823-726=146+485+195=718-(179+133)=124+114×2=441-270+278=317×2=188×5=262-190-68=276-171-25=350×2=385×2=690+562=449×2-802=492-16×6=828-(273+483)=275-160=1/10+8/10=168+29=796-632=354+630=106+(722-370)=54×8-179=693-(171+68)=18×8=858-173+388=400-38+533=70+181×5=15×9=541-409=118+596+226=373×2+252=812-237-214=116×6-644=19×2=760-287+672=959-23=773-618-118=327+48-208=57×5=865-(60+716)=153-64+220=784-39-91=324×3-583=421-152=435-31-114=753-219-101=332-(116+187)=156+249×2=665+526-783=950-(777-605)=197+(437-46)=345-52×2=107+(137-105)=972-311-255=477-12×2=352+119-124=719-(51+284)=473-(212+230)=525+283+180=671×(906-902)=499-(336-315)=962-669=853-(563+251)=66×5=123×8+805=827-557-212=244+924-312=315-34×2=205-51×2=794-476=694-(580-148)=147+155-285=306+730-416=42×(139-135)=392-107-40=342-(127-34)=473+476+45=267+158×6=158×5=189+80=140×8=497-384=106+21×8=611+315+369=325-115×2=224-59-102=455+30-12=466-(46+364)=424-56×2=808-431+457=300+166×3=867-335-284=552+955+910=630+780+337=471+(206-97)=686+320+435=98+38=961-(448-416)=2/8+3/8=380-115-250=909+268×2=793+764=691×4-32=47+146×5=960×(50-46)=988+810-735=337-317+390=752×3=444-86-200=113+(249-248)=853-258-30=933×9=115×5-503=422-340=643+510+802=858-635+187=1/7+5/7=322-204=170-142+454=619+510+764=407+(650-76)=2/6+4/6=111×2=118-15+79=456-(76+63)=308×3+164=304+326=913+(192-114)=780×7=389-88-282=636-15×3=958×8=320+988+297=799+129+56=126+456=266×3-778=127-(394-347)=94+208+544=14×2+504=487-209+77=493+(738-282)=403-371=422+854+573=3/7-1/7=199×4-328=377+(236-53)=137×(174-165)=438-238+500=298×9=432×2-712=144+838-226=163×3=583-(984-626)=5/9-1/9=981+(790-218)=193+189+455=491-258=37×(468-464)=382+(399-102)=25×(271-267)=161×(76-72)=682-(986-736)=463-174=141-93+77=780-47×8=584×3=205-108-75=16×5=106×3+408=106×5=412×2-709=128×(418-413)=528-105×4=823-68-31=153+440×2=395+(384-29)=129+218+398=359-207+103=878+238=118+380-169=769×9=181+237-158=432-331=926+75-577=150+772+961=473-(374-171)=132×5+248=365×4-119=649+77×6=405×2=991+226-703=29+(522-31)=176+43=843-(119+282)=237+483+118=10+169+788=492-96×5=519-296+958=258×(710-706)=899-132+919=420-(309+26)=3/10+4/10=571+928+65=104×5+322=417-(861-597)=624+114×4=897+158-878=970+881+181=602-(238+29)=784×(745-741)=162+167×4=241-155+207=965-830+313=224-(167-19)=951-358=201+91×3=494-116+73=882-178×2=53×6+379=110+337+349=336+119+331=402-163×2=607×6=481+182=437-(155+259)=358+277+73=49+413-120=120+79×2=683-(70+379)=798+(909-245)=249×3+254=915-17×8=827×(953-946)=381-(250-216)=446+115×2=403+61-273=195×3=94+166-25=389+(490-407)=748-195×3=241×7-315=52+133-48=933+225-150=363-(13+198)=965-(527-172)=894+231-116=629-122×3=269×5=111+425=887-167-510=376+91-416=350+113×4=242-(104+89)=728×(979-972)=285-59=873-(390-197)=611-(903-462)=490-(331-44)=225+313+418=490-(430-197)=393×9-182=447×2-834=123×7-327=320-(96+162)=147+538=369-(101+205)=704-(21+142)=114×5-312=379-(81+27)=95+651-475=802+(806-22)=517+828-944=81×2=31+411-374=405-48-58=122+23=121×6-591=908-(432+263)=4/7-2/7=113×8+536=614+672-327=393+78=462+(340-49)=1/4+2/4=175×5-622=參考答案163×(285-280)=815643-358=285833-(241+111)=48168+396-211=253201-152+151=20086-(129-104)=61218+86=304124-14+269=37941+(851-360)=532118+229=347140+(515-431)=224297×2-98=496412-97-150=165978-97=881994+370+175=1539452-34×3=350168+346+158=672979-159×2=661236×(189-186)=708137+310-422=25358-48×5=118452+(731-38)=11454/8-2/8=2/8934-(769-249)=41438×8=304439-32×4=31173×2+725=871858-(415+189)=254547+14+140=701367-(122+61)=18494+217=311444-(324-54)=174587+233-261=559905+(236-20)=1121925-247-93=585158+220-177=201237+382-395=224121×5=605593-(877-377)=933/8-1/8=2/8293×2-316=27034×7-69=169327-(211+60)=56316-(470-218)=64846-169-645=32809+31×5=964354-(868-577)=6314+209-162=61822-(274+505)=43626-270-327=29645×2-497=79396×9+21=88524×5=120663+647+430=174094×6-296=268124+92=21691+331=42298×7+312=998636-103+49=582306+(284-267)=32364×(393-388)=320300-94-199=774×7-341=177376+286+554=1216431-(411-286)=306612×8-663=4233782×4-274=2854381-(455-179)=105308-231-29=48818+61×4=1062256×4=1024935-(752-656)=8397/10-2/10=5/10182-149=33322-140=182752-(532-428)=648165+289=454810-436=374261+127=388184+237=421196-98=98295-136+866=1025300-16×4=236486×8-726=3162953+44+883=1880968-(97+216)=655299×2+67=665532×7=3724136×(134-131)=408321-(286+34)=196×(471-463)=76861+342+117=52059+162=221313-(176+53)=84969-689-13=267970×2=1940122×(399-392)=854514-93=421671-385+28=314118×(235-228)=826583-485=98492-121-268=103477-32×4=349476×4-793=111111+458-109=360786+26×7=968494-308=186600+974-585=989485+660+268=1413252-119-113=20296-(901-888)=283481-179-131=171338×2=676150+77+554=781395+(179-97)=477187-(537-471)=121330-(418-338)=250112+(336-14)=434110-27=83806+760-637=929424-422+252=254496-114-173=209974-(639+225)=110676+(909-768)=817250-152=98383×6-365=1933468-34=434421-34×9=115376-120-81=175190-17×8=54281×2=562340×4-814=546232+247=479413-28×9=161888-(474+302)=112925-56-361=508231+(400-72)=559600×7=4200867-731=13628+147×4=616670-(403+174)=93836×5-233=3947178×3-271=263768-77×6=30647×(441-432)=423484-197+203=49011+50+203=264621-202+268=68792×(246-240)=552443×2=886810-623=18747×4+125=3134/7+2/7=6/7202+123-209=116372-34+157=495694×(566-559)=485832×6+409=601408-(325-148)=231510×5-961=1589196+245-30=411454+(291-160)=585200-40×3=80446-105×4=26185+306-128=363899×9=809199×(285-277)=792155×6-383=547498-114-59=325151+(455-324)=282234-126=108152+78=230232+45=277861-(609-151)=403511×9=4599360-(17+157)=18646×6+841=111713×(420-413)=91102×(74-67)=7145/7-2/7=3/7895+593+164=1652231-(264-262)=229421×6-528=1998142+131×6=928188×3=564434+(422-178)=67853+(205-63)=195230×2=460405-47×7=76220×4-794=86340-17-240=83882+755=1637336-(16+235)=8542×(959-953)=252152+295-229=218841-59×4=605378-(367-258)=269700×8=5600686+875=1561474-(320-310)=464372-249=123249×(579-575)=996590×(785-779)=3540166-(106-41)=101161+264-317=108975-387=588220-80+186=32698+105+483=686366-91×2=184827-665+153=31536×4=144570×6=3420703-(474+169)=60681×4-281=2443880×(464-459)=4400894-805=89685-297+642=1030196-111+307=392388-351+596=633360×2-300=42022+(921-240)=703156+751-250=657457×2-96=81860+129+139=3283/5-1/5=2/538×5=190151×(147-143)=604389-(17+324)=48140-133+165=172814-285=529774-678+986=1082626×(557-553)=2504199×(351-347)=796118-67-41=10259+188×5=1199344×2-419=269887×(421-415)=5322237+63=300228-150+64=142634-24-109=5011/8+4/8=5/8452-(99+273)=80251-18×3=197352+217+452=1021373-242+109=240491-74+25=442556-83×2=390902-46×9=488233-56×2=121185+(498-441)=24217×7+325=444153×4+179=791703-677+674=700102+334=43698×(344-340)=39257+223×3=726781×(148-144)=3124220+363+53=636459-44×8=10799×(108-99)=891624-304=320795×(868-860)=6360864-848+898=91470+(362-296)=136780-(636-66)=210301+62+615=978311-44×4=135483-10×5=433121×7=84761×(321-312)=549339+61-309=91436-(117-21)=340264-12-39=213234-(135+24)=75813-546=267130×2+94=354207-(292-97)=12195+112+132=439850-656=19495+311-287=119799×8-268=612497×3=291158×2+228=544205+908-428=685185×4-608=132290+(234-220)=304418-(154+242)=22448-233-28=18791+172=263422×2=844371-66-106=199158×3-53=421233-(250-47)=30951-345-533=73527×(430-427)=1581512×9-944=3664378-71×5=23465-(281+105)=79137×(149-142)=959462×5=2310146+462=608585-277×2=31166+115=281444-296+116=26449+(134-102)=811/6+4/6=5/684-73+61=72631-391-103=137318-(121+86)=111175×4=700647-295=352479-(269+25)=185715-(457+55)=203268+(573-520)=321415-48-106=261338-(172+12)=154988-481=507396-345=51490+145+175=810977-808+480=64977+503-299=281491-27×3=410200+183-52=331115+154=269466-392=74315+322=637371×7-652=1945746-641-96=9337-(178+92)=6796×3=288324-(258-19)=85455-376=79644+873=151763×9+185=752199×4=796288×(166-159)=2016814+(105-61)=858352-25=327287-(96-95)=286344-163×2=18723+541-309=955865-108×4=433469+41×3=592426-129×2=168293+294=58754×(425-422)=16221+281×3=86435+141=176326-33=293607×(772-766)=364273+918-887=104940×9=8460464+(360-221)=603231×7-425=1192456+54+622=1132270+70=340720+93+69=8825/10-4/10=1/10785-137-511=137178×2=35621+34=55322-276+319=365488-290+38=236479+11-398=9231×(362-358)=12420×3+461=521807+731+702=2240497+278+100=875408-(73+81)=254212+281+304=797106+42=14835×(282-273)=315175×5-530=345847+291+113=1251400×9=360046+260+854=1160172+208=380702+880=1582614+(794-212)=1196408×2+85=90137×6-96=126125+(785-783)=127180+(361-183)=358315-215+272=3721/9+4/9=5/9571-75-341=155798-(172+432)=194419×6-64=2450610-(724-197)=83264-(430-425)=259478-195+143=426939-132×4=41183+82×7=657333-101-156=76100+194-144=150985+(231-91)=1125256×3-546=222300×2=600436+(479-252)=663638-(806-280)=112329+(234-206)=357895-20×7=755454-89×3=187483-361+116=238473+(480-169)=784414×3=1242287×2+131=705116+155=271572-(73+358)=141136×6-43=77378+707-43=742354+480-662=172456-(10+269)=177471×4-129=1755764+(987-557)=1194445-(289-249)=405266×6-68=15282/4-1/4=1/4231+65=296439-123=316606-193×2=220102+192=29415+(409-159)=265154+(359-88)=425791-415-233=143280-(990-919)=209280-(10+144)=126667-(464+61)=142441-272+187=356126×7-497=3852/3-1/3=1/3105×(29-22)=735729-112-440=177393-314=7910×(385-379)=6067+363-79=351279-173=106956+477=1433364-46=318660×(94-90)=2640630+948+692=2270865-235+488=1118415-(133+85)=197206-154+427=479603×(559-551)=4824133+(312-244)=201460-185+140=415129+172×4=817447-(274-64)=237845-568=27771+908+837=1816535-(818-409)=126878-543+979=1314476-(382+49)=45306-155-99=52974-184×5=54154×6-243=68171×(199-196)=21392×8-283=453381-10×8=301375-(450-213)=138381-176=20528×5+271=41153+452+637=1142492+(974-696)=770949-(101+181)=667451-405+107=153336+(93-55)=374537-103×5=22405×9=3645780-65-240=475304+67=371499-166-78=255514-(377-51)=18898×6+431=1019530+420=950692+(690-334)=1048825+157+668=1650424-(421-14)=17768-705=63908-645+580=84382×(436-428)=656855-40×4=695805×4-420=280034×(340-334)=204321-16+484=7896/9+2/9=8/9352+103=455802-(808-463)=45762+53=115327+887+652=1866330+87=417418-(70+296)=52134×2+88=356421+(656-522)=55515+59-10=64389×7-630=2093155×2-266=44414-(141+192)=81549-468+655=736437+456-327=566492-180=312272-23×5=157941-262×3=155388-111×3=55443-(313+117)=13422+336+71=829500×2-382=61822+234-204=52589-(529-14)=74570+(850-267)=115337×7+488=747905+948=1853180-(531-384)=33423-74-179=170356-(137-48)=26727×2+264=318475-201-58=216447-229+245=463221-(690-620)=151565-109=456383×8=3064266+(351-187)=430260+139=399501-288-79=134187+804=991585+174×3=1107104×(283-279)=416387+27-235=179716×9=64441/6+2/6=3/6463+(485-412)=536532+571-870=233384-(34+164)=186383-21×7=236499+174+93=766785-727+686=744379-343=36341-181=160497-(405-127)=219640+916=1556350-319=31180+102=28212×(460-454)=722/6-1/6=1/6233-62×3=47154+208-233=129141×(481-475)=846302+(579-200)=681829-651=178442-166-132=14465×(169-160)=585335+130=46552+(413-321)=144213+(594-283)=524478-49×6=184132+72=204426-(118+251)=57749-189-172=388311-287+409=43368×(109-105)=27251+96×4=435968-833-89=46179-23-43=113850-(424-375)=801284+461×2=120615+159+596=77077×(298-291)=539695-332-191=172135+145-269=11316×(123-117)=1896402-118×3=48267-(442-194)=1986+(199-180)=105207+50+655=91272×(197-191)=43211+369+54=434967-132×6=175753+549-456=846655-126=529823-726=97146+485+195=826718-(179+133)=406124+114×2=352441-270+278=449317×2=634188×5=940262-190-68=4276-171-25=80350×2=700385×2=770690+562=1252449×2-802=96492-16×6=396828-(273+483)=72275-160=1151/10+8/10=9/10168+29=197796-632=164354+630=984106+(722-370)=45854×8-179=253693-(171+68)=45418×8=144858-173+388=1073400-38+533=89570+181×5=97515×9=135541-409=132118+596+226=940373×2+252=998812-237-214=361116×6-644=5219×2=38760-287+672=1145959-23=936773-618-118=37327+48-208=16757×5=285865-(60+716)=89153-64+220=309784-39-91=654324×3-583=389421-152=269435-31-114=290753-219-101=433332-(116+187)=29156+249×2=654665+526-783=408950-(777-605)=778197+(437-46)=588345-52×2=241107+(137-105)=139972-311-255=406477-12×2=453352+119-124=347719-(51+284)=384473-(212+230)=31525+283+180=988671×(906-902)=2684499-(336-315)=478962-669=293853-(563+251)=3966×5=330123×8+805=1789827-557-212=58244+924-312=856315-34×2=247205-51×2=103794-476=318694-(580-148)=262147+155-285=17306+730-416=62042×(139-135)=168392-107-40=245342-(127-34)=249473+476+45=994267+158×6=1215158×5=790189+80=269140×8=1120497-384=113106+21×8=274611+315+369=1295325-115×2=95224-59-102=63455+30-12=473466-(46+364)=56424-56×2=312808-431+457=834300+166×3=798867-335-284=248552+955+910=2417630+780+337=1747471+(206-97)=580686+320+435=144198+38=136961-(448-416)=9292/8+3/8=5/8380-115-250=15909+268×2=1445793+764=1557691×4-32=273247+146×5=777960×(50-46)=3840988+810-735=1063337-317+390=410752×3=2256444-86-200=158113+(249-248)=114853-258-30=565933×9=8397115×5-503=72422-340=82643+510+802=1955858-635+187=4101/7+5/7=6/7322-204=118170-142+454=482619+510+764=1893407+(650-76)=9812/6+4/6=1111×2=222118-15+79=182456-(76+63)=317308×3+164=1088304+326=630913+(192-114)=991780×7=5460389-88-282=19636-15×3=591958×8=7664320+988+297=1605799+129+56=984