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188×8-23=142+74=347+(433-155)=91+343=889-78-418=32×(19-15)=264×3=108-97-11=339+692+875=29+56=82+862+12=159+219+360=389×4-313=497-(224+171)=234×2+195=415+973=23+(152-134)=221-(154+59)=129×3+280=657-251-336=897+405×2=213+165-119=86×(53-50)=88×3=347-12×5=238-(491-419)=829×3-974=150×6=310×3=118-(409-389)=150×(220-214)=63×2+292=367-277=344+154-108=177+132-250=654×9-383=480+(431-195)=861-349=213-(525-313)=162×(200-195)=783-590+381=470-(195+215)=358-74×2=2/4-1/4=67×(477-468)=273-(82+59)=87×9-304=772+935-55=413-190=48×(92-88)=20×5+305=671-295×2=890+296+659=571+175×2=141×6=332+49+12=764-20-61=137+170+141=394-269+956=648×(424-419)=774-66×5=803-18×6=303+290=120+552+200=421+889-503=565+194=252-177=295-35=746-169×3=149+475+868=491-(94+245)=633×3=581-525-16=160×4-92=148+153×2=937-(80-63)=1/5+3/5=789+318+905=216×(353-347)=504+(746-512)=341+540-535=111-12+792=279×3+845=893-141+594=493-131-100=906-79-497=351-71×2=3/5-1/5=461-121=215+204+475=860+860=277×3=148×4=9/10-1/10=456-(380-36)=372+141×4=55×9-169=503×(623-620)=55+219=253-(259-237)=2/8+3/8=281-32×5=349-86×4=582-(200+299)=839+371-541=52×9+478=88×7=85+739+49=164-156+220=406-273-14=985-563-378=383-261-93=593+573=395×2-206=85+(273-170)=527×(818-814)=359+(536-117)=479-(77+88)=358-(13+314)=173×5+512=693-574=915-(47+708)=108+368-248=468-(56+253)=990+(923-339)=364-(286-165)=299+(376-145)=142-24+276=461-423-14=495-(112-78)=272-130-57=386-(953-656)=283-16+12=469+(93-64)=147×(394-390)=253-(277-24)=334×(342-335)=154-(901-803)=964-(146+572)=830-(899-77)=821×9=255-122+90=548×9-784=749-(868-161)=382-34×2=259+148×2=146-111=809-56×8=47+427-380=552+52+219=820-(547-310)=3/5-2/5=692-347+773=564×(689-681)=396-(56+14)=637-138+191=407-(257+84)=85×8=316-20+330=328+38×2=658+754=75×7-283=55+39=4/9+2/9=23+37+133=874+778-269=44×(593-589)=382+464×2=214-(452-368)=196×(348-344)=860-(373+122)=162×3-453=877×3=446-(124-25)=646×5=367-367+277=106+77=97-(817-775)=374×2+561=158+563-26=679-224+685=486-355-20=623+(619-569)=843×6-810=202-81+314=197×3=860-625+254=211+46=545×(640-633)=337-40=927-(715+17)=146-29×3=505×2-182=278-(253-86)=601+(459-144)=46×5+139=926-(416+150)=383-(447-147)=78×(498-489)=821-(764-449)=191+179-83=758-12×8=438-325=466+222+221=2/5-1/5=712-(681-664)=475-47×4=977-(644-596)=33×2+384=463-157-70=400-(74+106)=993+418+860=640-(163+205)=112×2=191+(425-44)=237+113+597=195+327=619×(404-397)=24×9=811-294=453-73×6=277-(191+20)=892+893-136=19+441-380=4/7-1/7=955-(115+114)=28×8=497-424=163-25+247=780+900+428=252-10×5=293-20+145=317-285=843-488+482=467-(868-700)=722×7-70=236-(308-236)=674+916=221+195+514=764-442-264=946×2=985-(387+110)=502+428-203=819-40+460=462-169×2=440-79-334=793×4-882=931-303×2=126×4+317=256+(70-30)=776+(84-54)=194+80+625=344-(377-297)=722×5=321-199-67=815-268×3=156×3-18=754-64=776+775+627=818+670+461=709-164+401=302+80-217=2/7-1/7=994-820+91=978-(488-369)=201×4+137=850-131×4=296+90=429+825-758=146×2=157-13×4=379-165=138+211=118-11=146×3-321=656×(945-940)=668-(28+164)=28×9=116×(143-140)=205×6=984+(593-192)=984+279-863=290-(176+84)=567×3=887-(232+270)=373×2-390=405-357=155+244+548=681×7-148=198×(495-491)=404-324+383=33×(145-142)=105+378=966+880=905-252+381=441+56×6=292+208-184=586-(480+102)=96+(455-116)=962-135+403=391-385+417=281+189=729-96×3=316×2=714+(849-629)=3/7-1/7=327-(51+238)=19×(139-136)=28×7=102+587=286+80-233=491+137-293=54+378-77=464+169×3=40×4=12×(27-21)=132+278-158=143+305=1/6+4/6=204×2=690×5=253-152+278=766×4-175=781+155=777-(805-236)=253+(314-235)=920×(162-154)=799+118×7=458+42-91=263+206=1/4+2/4=313+294=678-(127+273)=762-(158+176)=371-201=922-434+704=77×8=299-(267+11)=708-(123+474)=305+960+891=103×(79-74)=226+105=46+179+187=169+266=466-47-284=468×5-85=940+765+354=305-174=181×9-275=318+(356-214)=386+(323-34)=402+235=161×5-180=146+11×3=642×(995-992)=722+118+89=187+87×7=462×9=524×3-371=114+199+218=284-15×2=138-36×3=425×7-378=485-135=68×(130-123)=532+111=566-292=102-77+322=335-181=429-305+962=338+287+350=326×4=195+465+51=194+12×2=764+239-665=116×8-376=159×5+274=737+678+511=395+888-783=538-(400-381)=469-24×6=432+327=551-191=281-(185-124)=222-(53+97)=56+(376-171)=143+225=797+(775-563)=692+(983-202)=280-25+220=496-218=622×(778-769)=394-24×2=895-(481+343)=833-177=264×(207-204)=342-239+207=711-165+932=139+(474-469)=290×4-324=438-(851-842)=217×(293-284)=469-441+204=206-173-15=153-90=217-(368-308)=328-(117+203)=484-140-66=815-516+116=984-856+670=250×2=100×8=462-318-61=300+230+389=176×5-361=287×3-338=429-(175+147)=349+100-225=876-(92+662)=293-105+99=770×9-396=620-55-132=666-88-70=562×3-91=157×2+219=471-101×3=427+(404-156)=289-11-196=247+219-223=942-109×7=798×5-60=170+811=871×6=919-195+329=249+(477-172)=496-45-111=513+181-540=337+(765-688)=410-(993-695)=355-117=709-211×2=564×6-482=696-46×3=456-250+28=731×5-90=449-308+115=761+487-31=362-141+120=230+(307-84)=101+314-82=437-(63+83)=212×(450-446)=482-317-54=42×8+464=863+845+787=829-381-335=482-311=878+579=119×6=925-66×9=365+436=948-399=708+(735-486)=6/9-1/9=738-61×7=102×6=447+115=503-435-58=682+932-575=434×(433-429)=92×6-96=676+279=61×2-24=780-136=169-22×4=604-141+79=733×(259-251)=904×(832-824)=469-410+140=725-51-328=871-349-200=129+747-186=645-11+996=416×2+835=408×9=89+186-155=219-48-133=226-30×2=574+(996-549)=145-(183-90)=54+281=919-131×2=414×2-203=426-376=139+314=165+234-162=849-143×3=134-58+361=498-42=913+110+327=77-(182-152)=491×3-742=401-96×3=214-49-13=202-57-58=374+(350-34)=280-43×2=108+115+304=84×(239-231)=494-308=625×(491-484)=41+314×3=798+266+389=579-(84+261)=648×4-859=427-52×7=423+883-709=27+27×3=699+333+763=91+785+47=234+164+297=803-689+976=254-44-86=281×3-165=601+87×7=273+(910-612)=467-184-46=59×2=66×(438-434)=454+83-118=175+299-306=439-105+105=211-157=394×2-756=73-(37-13)=92-(163-129)=244-(73+119)=330-211+77=474-79×3=248-198+144=734-(178+547)=928×8=515+368+340=443+(370-155)=192×5=863×6=782-479-272=365-(64+104)=105+(94-28)=404-(176-64)=537+232×4=446-94=814+392+319=116×5+48=275+199×3=1/7+2/7=122×(61-58)=244+164-72=691-410+277=911+(447-293)=12+623+437=34-11-17=924-(269+321)=989-388-531=4/7+2/7=560+111=1/7+3/7=585×4=326+463-507=958-(345+127)=839-669=109+332=49+279=763+(407-326)=93-47+169=458×9=982-(437-252)=402-(125+210)=6/9-2/9=668-439-119=798+(873-249)=45×7+230=288×2+845=512×5=616-(181-173)=566-(833-774)=486×8=354+22-357=129×3=217+607-378=991×6=201×2-54=339-254=264+14×9=175-(42-28)=303×2-269=439-200+53=455×(298-293)=14×(465-459)=536-(815-664)=422-(45+70)=236-15×8=251-73+118=424-159×2=146+483=341-(326-161)=876-(462+330)=864-223-24=24+202+285=178+291+469=302+127=419-(247+120)=409+(417-234)=540-79×4=454-(116+187)=571-(246-175)=235+99-140=726+275=722-(127-101)=238+436-656=313+(131-31)=720+(688-687)=672-516-61=129×6+130=383+49+147=766-621+404=193+(456-187)=429+(374-72)=626+(525-126)=402-(263-146)=137-(150-76)=180×(491-487)=865-88-411=387-120=157+649+745=487-43×8=423-(29+83)=831+(504-299)=123+240+447=464×2=81×7-257=783-12-364=97×7-523=288+91=178-(249-175)=198-23-41=94+188-255=492-193-37=274×(182-179)=971+(857-351)=443-198-236=14×2+519=809-556=267+(89-64)=157-(14+72)=17+176-140=983-715=866+366-560=884-555=756+(539-201)=221-(125+87)=212+152=246-192=968-80×9=99×2+315=595-231=126+362×2=21×3+140=573-(473-414)=76×8-226=962-207-528=108×8-699=434+52-32=545-(279+15)=941-320+462=914-444-423=477+75+134=66+428×2=443-155-78=22+(407-376)=554×3-136=90+298-216=245+(373-191)=289+306×2=596-(415-282)=474-164+147=108×6-445=451+195×2=880-177×4=406+352+961=475-68-373=462-(192+64)=356-(115+58)=371-17×7=195+631-254=23×7+631=94+395=575×(290-283)=520+358=4/8+3/8=446+(375-98)=274+140=130+503+63=21×4+115=53×9+275=303×2-66=953-(694-233)=449+14-287=422-271+263=148×(391-387)=565×(616-608)=352-(21+66)=121×8-843=55×3+234=876+89+130=688+288×3=259×3=41+659+125=972-316-433=122+81-194=129+35=459-457+339=627-378=231+106=84×4-197=607-194×3=221+164+321=323+89=912-533+331=708-15+721=489-196×2=423×(132-127)=193+606+153=1/8+6/8=13+376-72=97+282=941+77-477=420+108=171-145+156=862-310-296=718-182-536=339-48-99=91×6=333+44-377=287+70×6=92×4-175=561+166×5=243×2=627-608=53×(414-409)=408-(417-348)=374+754=470-138=136+287=533×3-24=850-567-127=198×3-317=73×(316-310)=853+402+821=440+95×4=125-18×2=959×(211-203)=842×8=6/10+4/10=4/8+2/8=312×2+166=410-(336-25)=968-266×2=379-24=818+44×6=194×(420-416)=795×5=90×(164-159)=228+(493-75)=293×3=456-135-263=945×6=88+(386-369)=341-18×5=114+71+725=455-(183+114)=779-613=164+299=148+503+340=38×(300-295)=27+87=148×4+223=157×6=435-199=280+204-90=976×(147-138)=670-97=460+211×2=112×6+316=505-211×2=876+91-721=205×4-704=249+266+90=886+937-715=334-190=963-182-422=782+(291-26)=222×9-284=319×(981-972)=429-(282-255)=816×2=228-(79+56)=978-496=266×2=474-(463-345)=10+116+335=786-(860-800)=195×5-489=500-(243-202)=324×2-305=898-16-61=657-57×9=157×9-143=791-(227+148)=4/7-3/7=869-(487+89)=400-30×9=300+497=351+(678-600)=90+(481-24)=484-298=869+90-39=483+11×6=428-390=97×(132-127)=625-(170+368)=664+116+24=296+(151-77)=406-32×9=957-104×9=109+311+44=310-(52+166)=224-(295-276)=23+(35-23)=917-(953-446)=342-141=969-58×3=224×(321-312)=4/8-1/8=983-269=808-660=722-320-336=429-114-308=616+(799-344)=424×(544-537)=213+161-242=249+(369-298)=334-165×2=146-(148-36)=294×(473-464)=999×3=462-279=357-105=783-122×3=798×9=325+(149-84)=735×(250-242)=831+336=226-83=参考答案188×8-23=1481142+74=216347+(433-155)=62591+343=434889-78-418=39332×(19-15)=128264×3=792108-97-11=0339+692+875=190629+56=8582+862+12=956159+219+360=738389×4-313=1243497-(224+171)=102234×2+195=663415+973=138823+(152-134)=41221-(154+59)=8129×3+280=667657-251-336=70897+405×2=1707213+165-119=25986×(53-50)=25888×3=264347-12×5=287238-(491-419)=166829×3-974=1513150×6=900310×3=930118-(409-389)=98150×(220-214)=90063×2+292=418367-277=90344+154-108=390177+132-250=59654×9-383=5503480+(431-195)=716861-349=512213-(525-313)=1162×(200-195)=810783-590+381=574470-(195+215)=60358-74×2=2102/4-1/4=1/467×(477-468)=603273-(82+59)=13287×9-304=479772+935-55=1652413-190=22348×(92-88)=19220×5+305=405671-295×2=81890+296+659=1845571+175×2=921141×6=846332+49+12=393764-20-61=683137+170+141=448394-269+956=1081648×(424-419)=3240774-66×5=444803-18×6=695303+290=593120+552+200=872421+889-503=807565+194=759252-177=75295-35=260746-169×3=239149+475+868=1492491-(94+245)=152633×3=1899581-525-16=40160×4-92=548148+153×2=454937-(80-63)=9201/5+3/5=4/5789+318+905=2012216×(353-347)=1296504+(746-512)=738341+540-535=346111-12+792=891279×3+845=1682893-141+594=1346493-131-100=262906-79-497=330351-71×2=2093/5-1/5=2/5461-121=340215+204+475=894860+860=1720277×3=831148×4=5929/10-1/10=8/10456-(380-36)=112372+141×4=93655×9-169=326503×(623-620)=150955+219=274253-(259-237)=2312/8+3/8=5/8281-32×5=121349-86×4=5582-(200+299)=83839+371-541=66952×9+478=94688×7=61685+739+49=873164-156+220=228406-273-14=119985-563-378=44383-261-93=29593+573=1166395×2-206=58485+(273-170)=188527×(818-814)=2108359+(536-117)=778479-(77+88)=314358-(13+314)=31173×5+512=1377693-574=119915-(47+708)=160108+368-248=228468-(56+253)=159990+(923-339)=1574364-(286-165)=243299+(376-145)=530142-24+276=394461-423-14=24495-(112-78)=461272-130-57=85386-(953-656)=89283-16+12=279469+(93-64)=498147×(394-390)=588253-(277-24)=0334×(342-335)=2338154-(901-803)=56964-(146+572)=246830-(899-77)=8821×9=7389255-122+90=223548×9-784=4148749-(868-161)=42382-34×2=314259+148×2=555146-111=35809-56×8=36147+427-380=94552+52+219=823820-(547-310)=5833/5-2/5=1/5692-347+773=1118564×(689-681)=4512396-(56+14)=326637-138+191=690407-(257+84)=6685×8=680316-20+330=626328+38×2=404658+754=141275×7-283=24255+39=944/9+2/9=6/923+37+133=193874+778-269=138344×(593-589)=176382+464×2=1310214-(452-368)=130196×(348-344)=784860-(373+122)=365162×3-453=33877×3=2631446-(124-25)=347646×5=3230367-367+277=277106+77=18397-(817-775)=55374×2+561=1309158+563-26=695679-224+685=1140486-355-20=111623+(619-569)=673843×6-810=4248202-81+314=435197×3=591860-625+254=489211+46=257545×(640-633)=3815337-40=297927-(715+17)=195146-29×3=59505×2-182=828278-(253-86)=111601+(459-144)=91646×5+139=369926-(416+150)=360383-(447-147)=8378×(498-489)=702821-(764-449)=506191+179-83=287758-12×8=662438-325=113466+222+221=9092/5-1/5=1/5712-(681-664)=695475-47×4=287977-(644-596)=92933×2+384=450463-157-70=236400-(74+106)=220993+418+860=2271640-(163+205)=272112×2=224191+(425-44)=572237+113+597=947195+327=522619×(404-397)=433324×9=216811-294=517453-73×6=15277-(191+20)=66892+893-136=164919+441-380=804/7-1/7=3/7955-(115+114)=72628×8=224497-424=73163-25+247=385780+900+428=2108252-10×5=202293-20+145=418317-285=32843-488+482=837467-(868-700)=299722×7-70=4984236-(308-236)=164674+916=1590221+195+514=930764-442-264=58946×2=1892985-(387+110)=488502+428-203=727819-40+460=1239462-169×2=124440-79-334=27793×4-882=2290931-303×2=325126×4+317=821256+(70-30)=296776+(84-54)=806194+80+625=899344-(377-297)=264722×5=3610321-199-67=55815-268×3=11156×3-18=450754-64=690776+775+627=2178818+670+461=1949709-164+401=946302+80-217=1652/7-1/7=1/7994-820+91=265978-(488-369)=859201×4+137=941850-131×4=326296+90=386429+825-758=496146×2=292157-13×4=105379-165=214138+211=349118-11=107146×3-321=117656×(945-940)=3280668-(28+164)=47628×9=252116×(143-140)=348205×6=1230984+(593-192)=1385984+279-863=400290-(176+84)=30567×3=1701887-(232+270)=385373×2-390=356405-357=48155+244+548=947681×7-148=4619198×(495-491)=792404-324+383=46333×(145-142)=99105+378=483966+880=1846905-252+381=1034441+56×6=777292+208-184=316586-(480+102)=496+(455-116)=435962-135+403=1230391-385+417=423281+189=470729-96×3=441316×2=632714+(849-629)=9343/7-1/7=2/7327-(51+238)=3819×(139-136)=5728×7=196102+587=689286+80-233=133491+137-293=33554+378-77=355464+169×3=97140×4=16012×(27-21)=72132+278-158=252143+305=4481/6+4/6=5/6204×2=408690×5=3450253-152+278=379766×4-175=2889781+155=936777-(805-236)=208253+(314-235)=332920×(162-154)=7360799+118×7=1625458+42-91=409263+206=4691/4+2/4=3/4313+294=607678-(127+273)=278762-(158+176)=428371-201=170922-434+704=119277×8=616299-(267+11)=21708-(123+474)=111305+960+891=2156103×(79-74)=515226+105=33146+179+187=412169+266=435466-47-284=135468×5-85=2255940+765+354=2059305-174=131181×9-275=1354318+(356-214)=460386+(323-34)=675402+235=637161×5-180=625146+11×3=179642×(995-992)=1926722+118+89=929187+87×7=796462×9=4158524×3-371=1201114+199+218=531284-15×2=254138-36×3=30425×7-378=2597485-135=35068×(130-123)=476532+111=643566-292=274102-77+322=347335-181=154429-305+962=1086338+287+350=975326×4=1304195+465+51=711194+12×2=218764+239-665=338116×8-376=552159×5+274=1069737+678+511=1926395+888-783=500538-(400-381)=519469-24×6=325432+327=759551-191=360281-(185-124)=220222-(53+97)=7256+(376-171)=261143+225=368797+(775-563)=1009692+(983-202)=1473280-25+220=475496-218=278622×(778-769)=5598394-24×2=346895-(481+343)=71833-177=656264×(207-204)=792342-239+207=310711-165+932=1478139+(474-469)=144290×4-324=836438-(851-842)=429217×(293-284)=1953469-441+204=232206-173-15=18153-90=63217-(368-308)=157328-(117+203)=8484-140-66=278815-516+116=415984-856+670=798250×2=500100×8=800462-318-61=83300+230+389=919176×5-361=519287×3-338=523429-(175+147)=107349+100-225=224876-(92+662)=122293-105+99=287770×9-396=6534620-55-132=433666-88-70=508562×3-91=1595157×2+219=533471-101×3=168427+(404-156)=675289-11-196=82247+219-223=243942-109×7=179798×5-60=3930170+811=981871×6=5226919-195+329=1053249+(477-172)=554496-45-111=340513+181-540=154337+(765-688)=414410-(993-695)=112355-117=238709-211×2=287564×6-482=2902696-46×3=558456-250+28=234731×5-90=3565449-308+115=256761+487-31=1217362-141+120=341230+(307-84)=453101+314-82=333437-(63+83)=291212×(450-446)=848482-317-54=11142×8+464=800863+845+787=2495829-381-335=113482-311=171878+579=1457119×6=714925-66×9=331365+436=801948-399=549708+(735-486)=9576/9-1/9=5/9738-61×7=311102×6=612447+115=562503-435-58=10682+932-575=1039434×(433-429)=173692×6-96=456676+279=95561×2-24=98780-136=644169-22×4=81604-141+79=542733×(259-251)=5864904×(832-824)=7232469-410+140=199725-51-328=346871-349-200=322129+747-186=690645-11+996=1630416×2+835=1667408×9=367289+186-155=120219-48-133=38226-30×2=166574+(996-549)=1021145-(183-90)=5254+281=335919-131×2=657414×2-203=625426-376=50139+314=453165+234-162=237849-143×3=420134-58+361=437498-42=456913+110+327=135077-(182-152)=47491×3-742=731401-96×3=113214-49-13=152202-57-58=87374+(350-34)=690280-43×2=194108+115+304=52784×(239-231)=672494-308=186625×(491-484)=437541+314×3=983798+266+389=1453579-(84+261)=234648×4-859=1733427-52×7=63423+883-709=59727+27×3=108699+333+763=179591+785+47=923234+164+297=695803-689+976=1090254-44-86=124281×3-165=678601+87×7=1210273+(910-612)=571467-184-46=23759×2=11866×(438-434)=264454+83-118=419175+299-306=168439-105+105=439211-157=54394×2-756=3273-(37-13)=4992-(163-129)=58244-(73+119)=52330-211+77=196474-79×3=237248-198+144=194734-(178+547)=9928×8=7424515+368+340=1223443+(370-155)=658192×5=960863×6=5178782-479-272=31365-(64+104)=197105+(94-28)=171404-(176-64)=292537+232×4=1465446-94=352814+392+319=1525116×5+48=628275+199×3=8721/7+2/7=3/7122×(61-58)=366244+164-72=336691-410+277=558911+(447-293)=106512+623+437=107234-11-17=6924-(269+321)=334989-388-531=704/7+2/7=6/7560+111=6711/7+3/7=4/7585×4=2340326+463-507=282958-(345+127)=486839-669=170109+332=44149+279=328763+(407-326)=84493-47+169=215458×9=4122982-(437-252)=797402-(125+210)=676/9-2/9=4/9668-439-119=110798+(873-249)=142245×7+230=545288×2+845=1421512×5=2560616-(181-173)=608566-(833-774)=507486×8=3888354+22-357=19129×3=387217+607-378=446991×6=5946201×2-54=348339-254=85264+14×9=390175-(42-28)=161303×2-269=337439-200+53=292455×(298-293)=227514×(465-459)=84536-(815-664)=385422-(45+70)=307236-15×8=116251-73+118=296424-159×2=106146+483=629341-(326-161)=176876-(462+330)=84864-223-24=61724+202+285=511178+291+469=938302+127=429419-(247+120)=52409+(417-234)=592540-79×4=224454-(116+187)=151571-(246-175)=500235+99-140=194726+275=1001722-(127-101)=696238+436-656=18313+(131-31)=413720+(688-687)=721672-516-61=95129×6+130=904383+49+147=579766-621+404=549193+(456-187)=462429+(374-72)=731626+(525-126)=1025402-(263-146)=285137-(150-76)=63180×(491-487)=720865-88-411=366387-120=267157+649+745=1551487-43×8=143423-(29+83)=311831+(504-299)=1036123+240+447=810464×2=92881×7-257=310783-12-364=40797×7-523=156288+91=379178-(249-175)=104198-23-41=13494+188-255=27492-193-37=262274×(182-179)=822971+(857-351)=1477443-198-236=914×2+519=547809-556=253267+(89-64)=292157-(14+72)=7117+176-140=53983-715=268866+366-560=672884-555=329756+(539-201)=1094221-(125+87)=9212+152=364246-192=54968-80×9=24899×2+315=513595-231=364126+362×2=85021×3+140=203573-(473-414)=51476×8-226=382962-207-528=227108×8-699=165434+52-32=454545-(279+15)=251941-320+462=1083914-444-423=47477+75+134=68666+428×2=922443-155-78=21022+(407-376)=53554×3-136=152690+298-216=172245+(373-191)=427289+306×2=901596-(415-282)=463474-164+147=457108×6-445=203451+195×2=841880-177×4=172406+352+961=1719475-68-373=34462-(192+64)=206356-(115+58)=183371-17×7=252195+631-254=57223×7+631=79294+395=489575×(290-283)=4025520+358=8784/8+3/8=7/8446+(375-98)=723274+140=414130+503+63=69621×4+115=19953×9+275=752303×2-66=540953-(694-233)=492449+14-