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664×(863-856)=855×2=22+(992-384)=430-210+956=862+775+197=232-24×2=227-206+174=197+174+628=965-738-164=285+(535-466)=172-22×7=3/7+4/7=217-71=270+220=391-241=303-(438-402)=588-(978-484)=336-(408-257)=357+(896-264)=564+106=380-340=376-375+310=150×4-86=365-174=109×8+265=449-265+155=526×9=224-19×7=827-115-482=49×(179-170)=80+148=691-144×2=63×7-314=227-212=994-492=234-(105+16)=83+199=907×4=457+(272-232)=426+662+159=484-293-140=1/7+5/7=301×8=477-(129+139)=629-260-46=95+(224-35)=396+175+292=50+(349-29)=440-289-110=599+87×9=565-(757-675)=3/7-2/7=984-(928-273)=143+25=568-(223+78)=785-(90+617)=462×2+250=663-31×8=123×2-195=295-35=190+301-111=988-883-12=946×3=274-(14+13)=50+48-84=58+(406-141)=471-16=997-188×4=567-458+706=388-259=238-50+23=406-269+317=69+842+78=509+281=339+754=747-641+483=184+419=272+377+51=74+58×3=444-187×2=151+34=550-36-154=406-(10+277)=264-(311-247)=136×4=770-(368+94)=298-186=971-88×2=288-146-127=208+(176-150)=892×9-532=447+256+716=117+190+660=411+561+930=678+21+72=167+(434-332)=396-62×4=603+484-809=827-110=135-114+216=400+48+82=40+233×4=469+242=268-184+357=704-144=164-14+165=655+904+619=335-37×2=660-(63+508)=618+78×5=426-28=81+45=117+284-256=2/7-1/7=113×(458-455)=384-(641-473)=511+92+198=851+321+532=888-355-353=16+31=919+(559-178)=491-137×2=203-118-28=242×4-102=20×8=136+257=237+394+887=270+345×2=404-(68+198)=309+52-310=305+(346-159)=359-342+667=410+719=491×9-366=445×2-631=239-(85+69)=531×9=134×5=370+74×7=876-(181+256)=113×3-21=442+73+101=308-273+191=447-413=23+102=855-112+139=475×8=209+999+446=569-(116+267)=395-(719-421)=492×3=41×(352-349)=281-114-153=411-61×3=143+290=200+63×3=414-(15+188)=126-(413-306)=651-(742-365)=392+16-405=430-67×2=976-674-163=90×6+390=697×(592-588)=94+245-231=148×2=773-683-88=496-147+12=244×7=227+199=677+(886-530)=376-243+219=438×2-483=15+(488-34)=78×8+154=196×2=243-(716-598)=120×(126-118)=415×(766-762)=187+141+367=877-333×2=985-(452-286)=924-(197+133)=124+87=161+577-672=489+363-778=251+964+772=57×4=838-(180+401)=755×(597-590)=285+123-368=249+256+127=42×(118-112)=152+218=3/6-2/6=480-(195-70)=422-(52+294)=139×(349-345)=468+763-220=452-23-194=274-20×5=423-51-365=1/6+4/6=565×6=199-(853-777)=439-372+298=408-181=923-826+548=917-339-364=918-(824-124)=187×4-562=354-(151+90)=94-(122-67)=428-157×2=544+414+510=73+70+634=72×3+454=476-(125+26)=258+826-93=190+62-247=298-(212-151)=83×7+469=61+196=146-131+260=330+(501-323)=521×5=1/9+4/9=929-92+583=389+214×2=222-(55+19)=104+384=586+34-349=970-142-454=544×(850-845)=21×4=442+452+20=22×6=96+248=961-242-710=72×5-312=268+434-117=386-105=661+(694-118)=338+278+359=319-(133+29)=146×4+340=362×5-312=304-15×9=268+145=998-837+926=424-308=300-59=771-108×7=964-(322+490)=494×2=188×5=498×7-653=822+809+916=653×(187-181)=146×(205-200)=66+163=352-278+408=254×(61-56)=85+336+233=238×2=369-(487-318)=546+302+57=949+422-768=122×4+122=956-846+13=285+504+529=482-235+140=393-82×2=543+(991-880)=926-24×8=308-15-259=913-(574+123)=949-510-414=581-192×3=117×7+333=769×3-347=968-(227+285)=988+414-713=326-177+31=30×(385-380)=354+56-366=255-42+197=469-83=94+428+395=238+(105-99)=380-36×3=758+(972-29)=314+374×2=4/5-1/5=228×(614-611)=690×6=812+349-370=132×(275-269)=376-(111+51)=277-(203-50)=722+186×3=168+283+54=157×5+317=414-(42+36)=409-(126-76)=966×6=968+(617-577)=422-32-245=432-(148-55)=233+225=496-(383+92)=383×2-286=751×4-465=386+347+70=266+200=97×8=69-58+23=368-24×6=39×(148-144)=389-153=375+410=450-(379-225)=103×8=327+136=950-610=527-(200+110)=795+982=163+(728-305)=629×4-342=166+732+426=62+52=725-235×3=104+(125-99)=98+104=429-38×8=509+239=153+166×4=108×4-149=51×9=206×(23-20)=415-64×4=505+659+276=486-476=765+56+299=968+404=845-317-152=607-21-497=171+621-13=779×9-835=897-446+138=437×(701-692)=723+433+363=947+(464-244)=969-480×2=282-281+310=716+(596-292)=331+10-202=3/5-2/5=419-51=597+817-238=55×9=109+665+203=65×6=939-(465-66)=350-101×3=689+586+244=460+(235-18)=623×4-695=172+144×2=811×6-772=983-739=145×(471-468)=719-(73+435)=748+190=588+776=341-55×3=495×2-16=4/7-1/7=124×3+171=396+(417-268)=96-40-56=305+181=483-70-182=224-135-14=322-(209+30)=311×5=383-106+417=813-15×6=654×3-342=99×7=499+(973-74)=720+852-576=404-29=426-(307+81)=194+48+422=950+262+955=79+327-392=601+357×2=881-(296+547)=777-502-253=639-135-350=297+172-432=241×9-480=134+260-377=136×4-42=475-(312+13)=523+150-210=670×3-773=282+18+442=351+12-145=361-95-106=12×9-59=840+(777-356)=43×(74-68)=357×6-815=905×(723-718)=4/6+2/6=373+66×4=901-451+451=461-421+145=480-196-197=294-195+306=384-(288-56)=399×(484-476)=493+(447-316)=109×7+131=710-538=106×3+417=313×2-302=353-(656-625)=37×(340-337)=686-268-108=647-27×7=850-(598-214)=495-195-227=488-(478-60)=267+522=545-302+517=429+(664-577)=54×2+474=341+374+526=406-36-223=395×7=982-147×6=53+285+140=382×2=470-153-153=459-147×3=815×7=68×6-51=537-(769-424)=557-320-128=901-34×3=13×8-85=390-(638-543)=30+94×4=2/4-1/4=246-68+131=14+375-187=790-500=206-(122+58)=480+192=133+162-45=33+170+234=986-701+593=961-961+18=12×(493-487)=414-56-319=854×7=44×8-304=994×(768-763)=331+48×4=585-320=161+(477-373)=914-(143-35)=149×(304-299)=583-22×5=421+974=755-376-80=453-341=267-201-66=384-110-259=885×(101-95)=358+318-237=204×2=386×2-530=417×5-28=116-17=231+(292-105)=199+205-226=673×2-824=629-(20+410)=583+995-108=490-(82+225)=375-30×4=448-191-171=500+81×3=43+(362-168)=184+838=171+241-46=102×5-89=674×5-111=287-168+789=980-(458+458)=450-(384-127)=447-400=962+369-823=252+181=458+(837-582)=43×8+227=330-61×4=387+94=34×(451-446)=397-(306-208)=412×2-668=95×(417-412)=333×3-477=461-(129+16)=710+151-370=171+382+67=394-(100+222)=249+378=325+(415-354)=612×7=515-116-163=929-(104+521)=296-(137-52)=482-61×3=28×9+357=358-(328-159)=649-69×8=342-171-152=461-53×6=829-506-288=63×5+14=449-292-84=447-(319+124)=107+(313-303)=190-111=241×5-482=53+(399-35)=34×4=378-25×7=82×5=882-(808-772)=199+14-169=790-(820-593)=301×2+138=838+961-901=945-592+271=67+292+606=200+(492-464)=808-46×2=73+102+657=463-128×2=290-101=192×4=861+523=77+656+928=341×(198-195)=90+360-183=192×2-263=725+(723-597)=279×(96-93)=174+636+167=902+671=545-51×8=405×6-879=373+(829-103)=559-436+585=959-73×6=464-(153+116)=258-17×9=476+62×2=768+62×9=179×(922-917)=710×2-373=208×2=453-(874-678)=319-(447-333)=425-102-233=465-(189+71)=349+421=633-166-424=459×(172-163)=367-355=932-(892-822)=391×8=545-98=462×(700-692)=400-257+31=815-312×2=575-(173+147)=498-189-76=131×4-268=149×5=534-125=435-280+81=442+(740-482)=341-(671-384)=93×8=284-(461-275)=660×9-397=89+10×8=490-307=108+329=155×4-445=335+139=588-515=814-737+172=97×7=131×2=21×9+441=645-563=71+250=354-(99+36)=457-(385+67)=201-(91-71)=59+473+305=57×5=197×2+447=899×7-805=624-456=425-61=847-(138+67)=573×8-722=907-161=227-(124-123)=813-(198+242)=398-295-30=84+(329-13)=824-(72+341)=595+91+972=960-(152-149)=450+983+420=458+303-711=379-(682-328)=235×(351-347)=433+(231-79)=598+593+474=36×(284-275)=16+596+49=500-(248+13)=132+79=396×(856-848)=797-489=983-20×4=547×8=780+909-81=152×4+184=145-115=637-(43+343)=785+199+149=447-(474-125)=45×8-203=270+112-27=101-(431-405)=361+(911-501)=65+322-249=112×(33-30)=516×(532-529)=526×8-208=3/5-1/5=1/5+2/5=297×(302-295)=830-(839-580)=897-(687-604)=726-(624-486)=449-142=14×4-21=3/7+2/7=172+440=279-178+111=935+79+457=147×(352-349)=358×4=499+50+337=432-130-102=672-(320+107)=957-(137+487)=21+461-32=608+252-534=397-44×7=936-512+901=172+(243-216)=12+67=743×(474-467)=123-118+104=49×(306-302)=18+277-175=239-33=514-(554-259)=12+47×9=3/6+2/6=175×2-89=233×4-201=102+335-25=322+180×2=827+(207-106)=488-41×5=303-(83+89)=788+129×4=379+89×6=863+(926-288)=306×2=244+107-280=492×8-48=368-164+42=412-240+132=490-(367-155)=450-304+84=174×5=553×(418-412)=828×3=978+68×8=67×9+247=495-435=663+199-757=378-78-296=955-426=457-(57+249)=4/6-1/6=471+(273-136)=938-(364-115)=477-50-331=81+228=471-349-118=102×(16-10)=14×(81-78)=74+312-158=63+644-139=127×3+56=147×(480-475)=929+168×5=173-109+266=315-(468-164)=356+(427-97)=328+(217-76)=686-463+70=347-329=681-418-246=443-181-103=86+195×2=68+105×7=24×(86-78)=111×8+575=359+59-72=4/6-2/6=899×5-394=183-(172-147)=299-40-208=168+185=68×8+391=978+(978-39)=183×2+196=112-32=277+199-384=435-36=748-(197+296)=388×4=378+131=263-29×4=305-28×5=47×(421-415)=175×4=99+24=928+537-49=851-(572+100)=124×7-185=618-224+781=460-329=246-204=455-98×4=525+109-313=870-595+774=809+(524-134)=446-34=87×(412-406)=73+74×2=170-(326-208)=326×3+307=337-(115+62)=1/8+5/8=323+(488-97)=214-203=665+639=235×3+423=456-(131-125)=478-(479-150)=109+(414-231)=382-296-48=268+762-95=329-261+138=1/4+2/4=407-375+70=765-293+780=122×(455-448)=482-129×3=348-(402-288)=417-(375+11)=703-10=232×2+189=59×4+97=774×8=899-852=232-128+386=720+(572-390)=488×(627-620)=314-11-302=393-297=482-208-215=213×2=5/8-1/8=733×(626-623)=779-559+834=380×(284-275)=272×3-124=325+(912-490)=95×3=369-37×6=322+81=672+(563-202)=5/7-1/7=469-(160+152)=628-178+661=166×(247-243)=303-112+114=424-113×3=95×(504-498)=278+(338-110)=877-130=208+959+511=250+20×5=1/3+2/3=147×(321-315)=338×2-359=560-26×8=168+71-167=26+270+386=35×7=375+82=303×(133-130)=346-159×2=186×9=383-67×4=64+225-263=536×8-895=707-(846-389)=390-41×3=703-181=5/8+3/8=48×4=975-(119+424)=900-111-771=232+(492-413)=124+(288-194)=177+181-138=951+49+634=132+(327-312)=465-338-110=277+216=127×2-253=16+415-195=289+408+209=参考答案664×(863-856)=4648855×2=171022+(992-384)=630430-210+956=1176862+775+197=1834232-24×2=184227-206+174=195197+174+628=999965-738-164=63285+(535-466)=354172-22×7=183/7+4/7=1217-71=146270+220=490391-241=150303-(438-402)=267588-(978-484)=94336-(408-257)=185357+(896-264)=989564+106=670380-340=40376-375+310=311150×4-86=514365-174=191109×8+265=1137449-265+155=339526×9=4734224-19×7=91827-115-482=23049×(179-170)=44180+148=228691-144×2=40363×7-314=127227-212=15994-492=502234-(105+16)=11383+199=282907×4=3628457+(272-232)=497426+662+159=1247484-293-140=511/7+5/7=6/7301×8=2408477-(129+139)=209629-260-46=32395+(224-35)=284396+175+292=86350+(349-29)=370440-289-110=41599+87×9=1382565-(757-675)=4833/7-2/7=1/7984-(928-273)=329143+25=168568-(223+78)=267785-(90+617)=78462×2+250=1174663-31×8=415123×2-195=51295-35=260190+301-111=380988-883-12=93946×3=2838274-(14+13)=24750+48-84=1458+(406-141)=323471-16=455997-188×4=245567-458+706=815388-259=129238-50+23=211406-269+317=45469+842+78=989509+281=790339+754=1093747-641+483=589184+419=603272+377+51=70074+58×3=248444-187×2=70151+34=185550-36-154=360406-(10+277)=119264-(311-247)=200136×4=544770-(368+94)=308298-186=112971-88×2=795288-146-127=15208+(176-150)=234892×9-532=7496447+256+716=1419117+190+660=967411+561+930=1902678+21+72=771167+(434-332)=269396-62×4=148603+484-809=278827-110=717135-114+216=237400+48+82=53040+233×4=972469+242=711268-184+357=441704-144=560164-14+165=315655+904+619=2178335-37×2=261660-(63+508)=89618+78×5=1008426-28=39881+45=126117+284-256=1452/7-1/7=1/7113×(458-455)=339384-(641-473)=216511+92+198=801851+321+532=1704888-355-353=18016+31=47919+(559-178)=1300491-137×2=217203-118-28=57242×4-102=86620×8=160136+257=393237+394+887=1518270+345×2=960404-(68+198)=138309+52-310=51305+(346-159)=492359-342+667=684410+719=1129491×9-366=4053445×2-631=259239-(85+69)=85531×9=4779134×5=670370+74×7=888876-(181+256)=439113×3-21=318442+73+101=616308-273+191=226447-413=3423+102=125855-112+139=882475×8=3800209+999+446=1654569-(116+267)=186395-(719-421)=97492×3=147641×(352-349)=123281-114-153=14411-61×3=228143+290=433200+63×3=389414-(15+188)=211126-(413-306)=19651-(742-365)=274392+16-405=3430-67×2=296976-674-163=13990×6+390=930697×(592-588)=278894+245-231=108148×2=296773-683-88=2496-147+12=361244×7=1708227+199=426677+(886-530)=1033376-243+219=352438×2-483=39315+(488-34)=46978×8+154=778196×2=392243-(716-598)=125120×(126-118)=960415×(766-762)=1660187+141+367=695877-333×2=211985-(452-286)=819924-(197+133)=594124+87=211161+577-672=66489+363-778=74251+964+772=198757×4=228838-(180+401)=257755×(597-590)=5285285+123-368=40249+256+127=63242×(118-112)=252152+218=3703/6-2/6=1/6480-(195-70)=355422-(52+294)=76139×(349-345)=556468+763-220=1011452-23-194=235274-20×5=174423-51-365=71/6+4/6=5/6565×6=3390199-(853-777)=123439-372+298=365408-181=227923-826+548=645917-339-364=214918-(824-124)=218187×4-562=186354-(151+90)=11394-(122-67)=39428-157×2=114544+414+510=146873+70+634=77772×3+454=670476-(125+26)=325258+826-93=991190+62-247=5298-(212-151)=23783×7+469=105061+196=257146-131+260=275330+(501-323)=508521×5=26051/9+4/9=5/9929-92+583=1420389+214×2=817222-(55+19)=148104+384=488586+34-349=271970-142-454=374544×(850-845)=272021×4=84442+452+20=91422×6=13296+248=344961-242-710=972×5-312=48268+434-117=585386-105=281661+(694-118)=1237338+278+359=975319-(133+29)=157146×4+340=924362×5-312=1498304-15×9=169268+145=413998-837+926=1087424-308=116300-59=241771-108×7=15964-(322+490)=152494×2=988188×5=940498×7-653=2833822+809+916=2547653×(187-181)=3918146×(205-200)=73066+163=229352-278+408=482254×(61-56)=127085+336+233=654238×2=476369-(487-318)=200546+302+57=905949+422-768=603122×4+122=610956-846+13=123285+504+529=1318482-235+140=387393-82×2=229543+(991-880)=654926-24×8=734308-15-259=34913-(574+123)=216949-510-414=25581-192×3=5117×7+333=1152769×3-347=1960968-(227+285)=456988+414-713=689326-177+31=18030×(385-380)=150354+56-366=44255-42+197=410469-83=38694+428+395=917238+(105-99)=244380-36×3=272758+(972-29)=1701314+374×2=10624/5-1/5=3/5228×(614-611)=684690×6=4140812+349-370=791132×(275-269)=792376-(111+51)=214277-(203-50)=124722+186×3=1280168+283+54=505157×5+317=1102414-(42+36)=336409-(126-76)=359966×6=5796968+(617-577)=1008422-32-245=145432-(148-55)=339233+225=458496-(383+92)=21383×2-286=480751×4-465=2539386+347+70=803266+200=46697×8=77669-58+23=34368-24×6=22439×(148-144)=156389-153=236375+410=785450-(379-225)=296103×8=824327+136=463950-610=340527-(200+110)=217795+982=1777163+(728-305)=586629×4-342=2174166+732+426=132462+52=114725-235×3=20104+(125-99)=13098+104=202429-38×8=125509+239=748153+166×4=817108×4-149=28351×9=459206×(23-20)=618415-64×4=159505+659+276=1440486-476=10765+56+299=1120968+404=1372845-317-152=376607-21-497=89171+621-13=779779×9-835=6176897-446+138=589437×(701-692)=3933723+433+363=1519947+(464-244)=1167969-480×2=9282-281+310=311716+(596-292)=1020331+10-202=1393/5-2/5=1/5419-51=368597+817-238=117655×9=495109+665+203=97765×6=390939-(465-66)=540350-101×3=47689+586+244=1519460+(235-18)=677623×4-695=1797172+144×2=460811×6-772=4094983-739=244145×(471-468)=435719-(73+435)=211748+190=938588+776=1364341-55×3=176495×2-16=9744/7-1/7=3/7124×3+171=543396+(417-268)=54596-40-56=0305+181=486483-70-182=231224-135-14=75322-(209+30)=83311×5=1555383-106+417=694813-15×6=723654×3-342=162099×7=693499+(973-74)=1398720+852-576=996404-29=375426-(307+81)=38194+48+422=664950+262+955=216779+327-392=14601+357×2=1315881-(296+547)=38777-502-253=22639-135-350=154297+172-432=37241×9-480=1689134+260-377=17136×4-42=502475-(312+13)=150523+150-210=463670×3-773=1237282+18+442=742351+12-145=218361-95-106=16012×9-59=49840+(777-356)=126143×(74-68)=258357×6-815=1327905×(723-718)=45254/6+2/6=1373+66×4=637901-451+451=901461-421+145=185480-196-197=87294-195+306=405384-(288-56)=152399×(484-476)=3192493+(447-316)=624109×7+131=894710-538=172106×3+417=735313×2-302=324353-(656-625)=32237×(340-337)=111686-268-108=310647-27×7=458850-(598-214)=466495-195-227=73488-(478-60)=70267+522=789545-302+517=760429+(664-577)=51654×2+474=582341+374+526=1241406-36-223=147395×7=2765982-147×6=10053+285+140=478382×2=764470-153-153=164459-147×3=18815×7=570568×6-51=357537-(769-424)=192557-320-128=109901-34×3=79913×8-85=19390-(638-543)=29530+94×4=4062/4-1/4=1/4246-68+131=30914+375-187=202790-500=290206-(122+58)=26480+192=672133+162-45=25033+170+234=437986-701+593=878961-961+18=1812×(493-487)=72414-56-319=39854×7=597844×8-304=48994×(768-763)=4970331+48×4=523585-320=265161+(477-373)=265914-(143-35)=806149×(304-299)=745583-22×5=473421+974=1395755-376-80=299453-341=112267-201-66=0384-110-259=15885×(101-95)=5310358+318-237=439204×2=408386×2-530=242417×5-28=2057116-17=99231+(292-105)=418199+205-226=178673×2-824=522629-(20+410)=199583+995-108=1470490-(82+225)=183375-30×4=255448-191-171=86500+81×3=74343+(362-168)=237184+838=1022171+241-46=366102×5-89=421674×5-111=3259287-168+789=908980-(458+458)=64450-(384-127)=193447-400=47962+369-823=508252+181=433458+(837-582)=71343×8+227=571330-61×4=86387+94=48134×(451-446)=170397-(306-208)=299412×2-668=15695×(417-412)=475333×3-477=522461-(129+16)=316710+151-370=491171+382+67=620394-(100+222)=72249+378=627325+(415-354)=386612×7=4284515-116-163=236929-(104+521)=304296-(137-52)=211482-61×3=29928×9+357=609358-(328-159)=189649-69×8=97342-171-152=19461-53×6=143829-506-288=3563×5+14=329449-292-84=73447-(319+124)=4107+(313-303)=117190-111=79241×5-482=72353+(399-35)=41734×4=136378-25×7=20382×5=410882-(808-772)=846199+14-169=44790-(820-593)=563301×2+138=740838+961-901=898945-592+271=62467+292+606=965200+(492-464)=228808-46×2=71673+102+657=832463-128×2=207290-101=189192×4=768861+523=138477+656+928=1661341×(198-195)=102390+360-183=267192×2-263=121725+(723-597)=851279×(96-93)=837174+636+167=977902+671=1573545-51×8=137405×6-879=1551373+(829-103)=1099559-436+585=708959-73×6=521464-(153+116)=195258-17×9=105476+62×2=600768+62×9=1326179×(922-917)=895710×2-373=1047208×2=416453-(874-678)=257319-(447-333)=205425-102-233=90465-(189+71)=205349+421=770633-166-424=43459×(172-163)=4131367-355=12932-(892-822)=862391×8=3128545-98=447462×(700-692)=3696400-257+31=174815-312×2=191575-(173+147)=255498-189-76=233131×4-268=256149×5=745534-125=409435-280+81=236442+(740-482)=700341-(671-384)=5493×8=744284-(461-275)=98660×9-397=554389+10×8=169490-307=183108+329=437155×4-445=175335+139=474588-515=73814-737+172=24997×7=679131×2=26221×9+441=630645-563=8271+250=321354-(99+36)=219457-(385+67)=5201-(91-71)=18159+473+305=83757×5=285197×2+447=841899×7-805=5488624-456=168425-61=364847-(138+67)=642573×8-722=3862907-161=746227-(124-123)=226813-(198+242)=373398-295-30=7384+(329-13)=400824-(72+341)=411595+91+972=1658960-(152-149)=957450+983+420=1853458+303-711=50379-(682-328)=25235×(351-347)=940433+(231-79)=585598+593+474=166536×(284-275)=32416+596+49=661500-(248+13)=239132+79=211396×(856-848)=3168797-489=308983-20×4=903547×8=4376780+909-81=1608152×4+184=792145-115=30637-(43+343)=251785+199+149=1133447-(474-125)=9845×8-203=157270+112-27=355101-(431-405)=75361+(911-501)=77165+322-249=138112×(33-30)=336516×(532-529)=1548526×8-208=40003/5-1/5=2/51/5+2/5=3/5297×(302-295)=2079830-(839-580)=571897-(687-604)=814726-(624-486)=588449-142=30714×4-21=353/7+2/7=5/7172+440=612279-178+111=212935+79+457=1471147×(352-349)=441358×4=1432499+50+337=886432-130-102=200672-(320+107)=245957-(137+487)=33321+461-32=450608+252-534=326397-44×7=89936-512+901=1325172+(243-216)=19912+67=79743×(474-467)=5201123-118+104=10949×(306-302)=19618+277-175=120239-33=206514-(554-259)=21912+47×9=4353/6+2/6=5/6175×2-89=261233×4-201=731102+335-25=412322+180×2=682827+(207-106)=928488-41×5=283303-(83+89)=131788+129×4=1304379+89×6=913863+(926-288)=1501306×2=612244+107-280=71492×8-48=3888368-164+42=246412-240+132=30449