三年級(jí)數(shù)學(xué)(上)計(jì)算題專項(xiàng)練習(xí)附答案集錦

三年級(jí)數(shù)學(xué)(上)計(jì)算題專項(xiàng)練習(xí)附答案集錦2/8-1/8=929+(836-304)=843-128×2=407-27-306=143+93=882-(819-493)=488-(382-230)=827-88×9=41×3=70×5+37=167-(428-278)=990+(925-264)=858-(772+45)=491-(235-132)=205+708+13=215×4=4/7-2/7=88×9+91=72×6+282=72+319=742-163×2=398×2-172=326×(684-678)=584+214+492=400+(347-62)=876+(502-267)=132+136-97=128-61+239=177+186=105×(585-578)=296-123+75=980-861+408=403-375=140×(442-438)=208×(130-127)=750×9=578-282+181=434-25-368=430-154=326-(490-278)=828+687-698=273×3-245=723-499+285=389+(176-70)=850+821-724=6/8+2/8=351-(93+223)=701-(460+82)=967-(784-614)=361+82=522×(121-117)=342+56-387=794+234+488=151+173×2=336-208-25=239+(216-175)=223×3=195×3-431=755+(981-456)=127-(247-126)=490-(284+116)=733×(70-62)=483-74-176=484-465+40=845-321+805=59×2+454=813+927-815=818-434=450-111-256=44+178=325-(179+22)=370-249+211=131×4-116=900×6=170+(936-558)=154×3-346=787×7-308=342×2-638=949-35×5=645×4=5/6-1/6=51-(117-88)=358-242+234=721-141×5=981-20×6=834-(47+487)=203-(186-154)=358+30+580=438-218+194=383+115=399-(427-77)=907+131×5=441-36×7=732+958=147×4=307+(480-312)=625-135-308=34×(242-237)=302-159-45=353-35+34=229+69×5=150+164+234=127+364-56=51×6+724=677-(721-626)=443-26-203=465+87×5=506+861=198+850+580=101×7-615=139+(398-147)=393-313-63=2/9-1/9=17×(417-409)=991-(654+160)=93×6-302=87×(33-27)=257+231=323+126=313×(140-131)=393-(481-418)=928-(619+307)=61×2=459×(438-433)=811-219-510=236+(342-14)=759-549-191=905×8=107×3=774-208-507=499-211=91-14=579-(144-95)=3/5-1/5=297+364=223+985-375=339-39-284=399-(338-224)=211+949+318=48-(336-327)=83+195=453-(31+375)=922-(364-282)=296+347+198=847-138-494=473-373+80=457-309+70=69×(476-467)=381×8=186+191=113+306=854+626-498=977-(303+275)=232-22×5=666+403-947=419-67×2=237-(111+103)=248+136+750=416-238=398×3-658=67+(850-239)=438+600-760=40+18×5=461-(341+79)=195×6-795=280-263+66=121×(350-345)=447-67×3=408-105=138×(423-418)=775×9=873-179-401=141+104-182=475-161-235=959-(279+217)=523×6=228-217+428=20+(227-68)=358-(17+183)=5/8-2/8=360-99=407+(344-340)=237×4-902=144+264+584=476-347=452+(836-101)=71×(270-263)=20+66+724=206-(50+140)=466-40×6=154×3-365=549×3-406=756+(539-328)=146×(295-290)=263+(483-21)=273+(89-41)=48×4+901=142×5-449=179×4-54=391+338=515×8=464-65×6=523-322+320=97×8=435+129×7=612×5=23+36+160=281+628-560=82×(98-90)=757-(534+119)=407+15-205=466-418=709+117×3=257-130=320-84=96×7-44=367-12×6=497-118-358=250×2+43=506×2=360-24×8=36×9+126=810-(871-588)=764+145×5=32×2+607=458+(461-110)=164+(308-281)=234×4-529=706-66-154=25×6+324=976-81=177×(209-206)=258+10×5=229-(222-64)=136+47=630-376-48=435+(309-284)=350+(931-98)=452-(246-169)=357+119=620-64×7=226×4-397=769-507=338+158-310=417-(285+58)=145+590-263=777-(913-222)=800+(791-564)=125-87-28=477-419+101=3/10+2/10=447+(478-356)=952-491-150=11×6+320=101+391-439=804+29-332=387-95-47=951-(744-87)=127+244-154=29×9=385-(458-176)=305+854-407=413-17×5=81×4-58=154+372=598×9-807=496-277-196=293+640-195=274+83+50=191×4-558=229-186=382×7-517=780-(894-184)=953×(205-197)=729-25-219=11×(498-495)=917-436-262=467+200+247=910-(438+89)=147×5=306-15×7=226+171-128=360+479+148=107+(245-65)=124×2=74×5+359=137×6-290=669-(242-146)=400-369+86=236+(480-79)=367×(327-319)=383-(284+19)=936-310-464=228+189-150=268+231=318×(161-158)=106-95+25=72+629-616=807-356=366-61=827-536-137=479-181=263×8-175=642-428+553=587-509=913-(829+44)=3/6+2/6=326+690-151=617-59×7=314-273+221=73+374=336+55×4=425-56=377-21-235=295-56+143=959+(547-334)=94+267=302-184=350-(356-135)=577×7=163-35+59=711×2-194=761-(621-492)=668-368-202=824-118×2=306-143+404=410-54=78+68×2=317-204+935=430×4=378+(713-618)=409×2-429=415-12×8=977-586+638=188+226-56=277×2=28×2+115=897×3-122=101-21+222=425+81+38=627×6-657=551+957+904=941-(567-355)=653-522+993=70+150=465-(186-152)=771-(740-435)=773+625-838=827-74×3=905×7=871×(621-613)=491×4-245=123×4=438+686=59×3+984=424+(274-151)=322×3-344=80+148=707-19+852=311+79=488+46+313=564×7=351-(253-89)=403+(439-294)=2/5-1/5=438+(463-25)=642-224=773-305=219+171-257=20×2+852=56×9=370-125+253=151-(222-108)=478-82=628+230=609+274+885=285-39×2=460×2=55×3+257=420-(274+73)=439+164=215+156-258=360+516+299=269+512+92=536+688-284=46×3+78=326-(33+170)=752-(830-772)=715×(651-648)=134-22+325=152+86+558=894+270×3=919-398=167+72=3/8+4/8=300-190-50=964-(715+65)=829+(929-308)=600×4-947=41×7+382=46+(409-149)=290+(468-329)=883-64=934-668+455=666-(752-677)=687×(645-636)=259-91=972-17=759-165+129=140+253-208=291-216-39=474-216×2=932-(322+271)=15×2=571-13×3=203-103-19=50+408-57=271+811-598=721×(476-473)=953-(287+657)=128+159+163=2/4-1/4=147×(30-26)=983-730=150+134=87+226-159=971-597-341=922-(387+454)=16×(349-342)=168×2=834-56-724=788-190=270-39=25×(399-394)=236×9-601=769-(186+127)=248-(283-124)=111+132+116=285-235=268+170=292×2+128=882-788+982=169+686-10=447-(497-193)=237-232+457=391-(57+197)=994-353-470=711-(519-422)=457-(410-10)=763-458+400=559+(569-54)=128×5+331=629-560=345-104=807-134=24+289-167=162×6+363=98-(339-330)=436+131+381=621-11×3=262+27-140=457+411+78=970-(13+290)=482×2=489-217-260=636-(759-174)=838+883-557=414-53×3=60+366-375=784-109-223=285-257+302=98×(148-140)=809+524-886=278+(970-181)=95×8=830-57-699=84-(468-394)=762-171-535=808-567=676-(651-603)=63+(465-387)=261×(239-230)=489-24×8=2/6+3/6=355+(168-143)=76×6=584×(270-261)=806-(307+443)=276+175-45=820×6=163+59=897-39×2=753+430+540=183×4=41×9+206=196×5-580=55+(218-120)=230+118×6=14+926+30=187×3=228-193=639-(275+194)=467+36×3=20×(950-941)=896+729-904=107+170+97=359-288=365-(93+124)=6/9+3/9=121×4-480=897-(491-423)=119+208=570+161+668=397-61-27=164+176=426×6=486+572=223×5-181=485-(291+50)=982+(294-77)=151+340=116×3=477-128×3=118+116=590+(487-229)=307-96=393-(473-414)=298+120×2=534-(261+169)=580+360=510-85×2=275-140=155+343=367-(356-12)=308+72=150-138+112=306-26×3=89+205=403+309=494-146-306=873-697=591-23+59=169-35+743=361+(941-728)=349+63+532=364+92-289=376-357+27=945-673-118=179+211=243+454+729=681-506=38+51=154×4-237=170×3+435=3/7+2/7=968+(791-49)=724-289-153=234-16×4=846-490=598×2=740×(655-648)=378+642-564=983×(632-625)=180×6=193+484+720=488-(37+131)=125×4-327=3/6-2/6=168+90=269-137+265=187+146×5=307-12-262=482-409+281=60+401+217=689+160=300+15×3=473+(436-225)=365+952-550=358-275=285×2-360=657+247=5/10+2/10=240+100-191=910-646+822=431+196×3=883-(737-332)=409-18×9=297+765-424=460+117+153=250+(78-49)=412-89×3=478-84×2=896-616-100=28×9=48+241-29=447+883-274=794-(96+523)=605-136-234=316×2-619=862-(572-311)=218-(122+19)=37+30+86=359-252-14=330+57=381-51+65=464-(430-95)=84+786+89=619-(65+181)=144×4+283=816×8-483=397-43×3=50+85+390=36×3-66=96×3=653+(405-185)=493-44×7=359-42×4=291+414=889+646+494=59×5=90×(47-42)=322+79×8=467-44×3=24×8=440×(323-319)=234×(277-274)=567+225+48=745-(87+512)=799-(283+95)=881+967+458=200+224-237=481-(201+229)=931-110-366=959-(405+419)=484-(291+68)=713+426=235+(286-258)=44×4+316=15×6=383×6-926=340-242+232=242-(101-16)=357-(339-141)=362+428+188=534-155+210=440-(205+10)=610×2-13=228+262+409=328+(458-254)=92×6+993=366+95×6=940-285×3=306×(545-542)=418×2-30=611-42×8=316-(52+219)=71×8-234=171+195=681-471=174×4=264-214+167=426-199=372×2-503=565-(330+95)=811+(278-84)=486-(264+172)=788×6-313=385×2+363=123+319-110=5/7-1/7=187-161=1/8+6/8=167+256-94=711×(375-366)=437-370+371=820-459+542=218+177=122+36=429×6=458-285+83=444-(445-36)=426-(264+20)=28×(391-388)=131+206=327+55×9=265+828-786=625-(95+320)=107×(287-278)=406-148-28=251-54×2=387-(493-213)=464-75×5=950×(247-244)=497-(135+232)=777-716+105=465-197=921×(618-611)=233+374×2=326-(91-32)=947-453-170=491-(472-263)=278+462+75=727×(616-609)=68×(80-73)=630-48=217+(470-55)=476+96×3=736×(123-117)=142×(482-479)=144-103=246×5-994=57+488+255=875+53+696=452-216×2=957+444+627=156-49=158+177=458-(59+28)=373+229=323-204+848=607×7-312=428+821-410=351+150=707-(287+165)=294-25×6=994×(372-369)=32+857+765=873-802-60=275+14×8=382-30×2=219×4+709=289×3-706=254-18-201=912-420×2=900-121=58+307-320=82+197=226×2=399-27×3=486-(292-212)=858+389×2=348+597=1/8+5/8=372-(70+293)=390-30×2=313+501+804=763×2=337+(226-133)=773-20×9=105-(12+52)=564-73×4=470-(387-316)=113+(357-263)=264+165=143×3=707-(554+126)=214-160+333=4/6-2/6=341-(422-187)=236-108=560-472=695+71+729=617+241+21=341×2=102-24+863=150×6-602=461-338=5/10-3/10=5/9+4/9=242+(101-60)=13+738+842=977-608-30=465+804+273=490-86×4=437+56×7=87+375-91=161×(414-411)=354-25-18=711-366-312=369×(815-807)=776×8-359=797-449-17=482+507-890=479-423=802+(620-400)=169×4+215=44×4=75+103-147=267×(425-420)=951×9=811-44×8=47+(987-927)=734-112×4=175-(24+61)=553-(739-610)=119+72+118=121-25+267=53×7-337=33+315-201=401-111-37=987-608+632=538+203+127=468-397+112=345+(311-132)=705×(954-945)=335-(18+10)=196×2-338=117×(341-334)=467-152-288=919+966+525=24×(205-201)=400-72-50=107×5=168+(984-356)=96×9=839-63×9=97+238-241=208+(915-597)=411×2-415=65+119×4=578+195+150=418-(219+92)=357-101×3=161×6-156=162+(691-568)=268-83=225-(58+21)=299×6-163=659+247×4=328-143=222+(325-146)=274+93×6=420×2-396=177×(421-417)=352-23×3=345-(413-337)=860×(935-930)=91+508=565×3-322=154+151+546=745×3=147+51+214=45×(357-352)=828-360+456=723×8=1/6+5/6=247+544+333=331-(261-260)=24×9+176=235×4=104-(24+63)=673-486=195-12×5=101×(387-379)=627×4=886-101×7=173×(93-88)=37+23×5=72-57+214=52+306-86=579-(812-487)=112-44-62=504×5=211-56×3=參考答案2/8-1/8=1/8929+(836-304)=1461843-128×2=587407-27-306=74143+93=236882-(819-493)=556488-(382-230)=336827-88×9=3541×3=12370×5+37=387167-(428-278)=17990+(925-264)=1651858-(772+45)=41491-(235-132)=388205+708+13=926215×4=8604/7-2/7=2/788×9+91=88372×6+282=71472+319=391742-163×2=416398×2-172=624326×(684-678)=1956584+214+492=1290400+(347-62)=685876+(502-267)=1111132+136-97=171128-61+239=306177+186=363105×(585-578)=735296-123+75=248980-861+408=527403-375=28140×(442-438)=560208×(130-127)=624750×9=6750578-282+181=477434-25-368=41430-154=276326-(490-278)=114828+687-698=817273×3-245=574723-499+285=509389+(176-70)=495850+821-724=9476/8+2/8=1351-(93+223)=35701-(460+82)=159967-(784-614)=797361+82=443522×(121-117)=2088342+56-387=11794+234+488=1516151+173×2=497336-208-25=103239+(216-175)=280223×3=669195×3-431=154755+(981-456)=1280127-(247-126)=6490-(284+116)=90733×(70-62)=5864483-74-176=233484-465+40=59845-321+805=132959×2+454=572813+927-815=925818-434=384450-111-256=8344+178=222325-(179+22)=124370-249+211=332131×4-116=408900×6=5400170+(936-558)=548154×3-346=116787×7-308=5201342×2-638=46949-35×5=774645×4=25805/6-1/6=4/651-(117-88)=22358-242+234=350721-141×5=16981-20×6=861834-(47+487)=300203-(186-154)=171358+30+580=968438-218+194=414383+115=498399-(427-77)=49907+131×5=1562441-36×7=189732+958=1690147×4=588307+(480-312)=475625-135-308=18234×(242-237)=170302-159-45=98353-35+34=352229+69×5=574150+164+234=548127+364-56=43551×6+724=1030677-(721-626)=582443-26-203=214465+87×5=900506+861=1367198+850+580=1628101×7-615=92139+(398-147)=390393-313-63=172/9-1/9=1/917×(417-409)=136991-(654+160)=17793×6-302=25687×(33-27)=522257+231=488323+126=449313×(140-131)=2817393-(481-418)=330928-(619+307)=261×2=122459×(438-433)=2295811-219-510=82236+(342-14)=564759-549-191=19905×8=7240107×3=321774-208-507=59499-211=28891-14=77579-(144-95)=5303/5-1/5=2/5297+364=661223+985-375=833339-39-284=16399-(338-224)=285211+949+318=147848-(336-327)=3983+195=278453-(31+375)=47922-(364-282)=840296+347+198=841847-138-494=215473-373+80=180457-309+70=21869×(476-467)=621381×8=3048186+191=377113+306=419854+626-498=982977-(303+275)=399232-22×5=122666+403-947=122419-67×2=285237-(111+103)=23248+136+750=1134416-238=178398×3-658=53667+(850-239)=678438+600-760=27840+18×5=130461-(341+79)=41195×6-795=375280-263+66=83121×(350-345)=605447-67×3=246408-105=303138×(423-418)=690775×9=6975873-179-401=293141+104-182=63475-161-235=79959-(279+217)=463523×6=3138228-217+428=43920+(227-68)=179358-(17+183)=1585/8-2/8=3/8360-99=261407+(344-340)=411237×4-902=46144+264+584=992476-347=129452+(836-101)=118771×(270-263)=49720+66+724=810206-(50+140)=16466-40×6=226154×3-365=97549×3-406=1241756+(539-328)=967146×(295-290)=730263+(483-21)=725273+(89-41)=32148×4+901=1093142×5-449=261179×4-54=662391+338=729515×8=4120464-65×6=74523-322+320=52197×8=776435+129×7=1338612×5=306023+36+160=219281+628-560=34982×(98-90)=656757-(534+119)=104407+15-205=217466-418=48709+117×3=1060257-130=127320-84=23696×7-44=628367-12×6=295497-118-358=21250×2+43=543506×2=1012360-24×8=16836×9+126=450810-(871-588)=527764+145×5=148932×2+607=671458+(461-110)=809164+(308-281)=191234×4-529=407706-66-154=48625×6+324=474976-81=895177×(209-206)=531258+10×5=308229-(222-64)=71136+47=183630-376-48=206435+(309-284)=460350+(931-98)=1183452-(246-169)=375357+119=476620-64×7=172226×4-397=507769-507=262338+158-310=186417-(285+58)=74145+590-263=472777-(913-222)=86800+(791-564)=1027125-87-28=10477-419+101=1593/10+2/10=5/10447+(478-356)=569952-491-150=31111×6+320=386101+391-439=53804+29-332=501387-95-47=245951-(744-87)=294127+244-154=21729×9=261385-(458-176)=103305+854-407=752413-17×5=32881×4-58=266154+372=526598×9-807=4575496-277-196=23293+640-195=738274+83+50=407191×4-558=206229-186=43382×7-517=2157780-(894-184)=70953×(205-197)=7624729-25-219=48511×(498-495)=33917-436-262=219467+200+247=914910-(438+89)=383147×5=735306-15×7=201226+171-128=269360+479+148=987107+(245-65)=287124×2=24874×5+359=729137×6-290=532669-(242-146)=573400-369+86=117236+(480-79)=637367×(327-319)=2936383-(284+19)=80936-310-464=162228+189-150=267268+231=499318×(161-158)=954106-95+25=3672+629-616=85807-356=451366-61=305827-536-137=154479-181=298263×8-175=1929642-428+553=767587-509=78913-(829+44)=403/6+2/6=5/6326+690-151=865617-59×7=204314-273+221=26273+374=447336+55×4=556425-56=369377-21-235=121295-56+143=382959+(547-334)=117294+267=361302-184=118350-(356-135)=129577×7=4039163-35+59=187711×2-194=1228761-(621-492)=632668-368-202=98824-118×2=588306-143+404=567410-54=35678+68×2=214317-204+935=1048430×4=1720378+(713-618)=473409×2-429=389415-12×8=319977-586+638=1029188+226-56=358277×2=55428×2+115=171897×3-122=2569101-21+222=302425+81+38=544627×6-657=3105551+957+904=2412941-(567-355)=729653-522+993=112470+150=220465-(186-152)=431771-(740-435)=466773+625-838=560827-74×3=605905×7=6335871×(621-613)=6968491×4-245=1719123×4=492438+686=112459×3+984=1161424+(274-151)=547322×3-344=62280+148=228707-19+852=1540311+79=390488+46+313=847564×7=3948351-(253-89)=187403+(439-294)=5482/5-1/5=1/5438+(463-25)=876642-224=418773-305=468219+171-257=13320×2+852=89256×9=504370-125+253=498151-(222-108)=37478-82=396628+230=858609+274+885=1768285-39×2=207460×2=92055×3+257=422420-(274+73)=73439+164=603215+156-258=113360+516+299=1175269+512+92=873536+688-284=94046×3+78=216326-(33+170)=123752-(830-772)=694715×(651-648)=2145134-22+325=437152+86+558=796894+270×3=1704919-398=521167+72=2393/8+4/8=7/8300-190-50=60964-(715+65)=184829+(929-308)=1450600×4-947=145341×7+382=66946+(409-149)=306290+(468-329)=429883-64=819934-668+455=721666-(752-677)=591687×(645-636)=6183259-91=168972-17=955759-165+129=723140+253-208=185291-216-39=36474-216×2=42932-(322+271)=33915×2=30571-13×3=532203-103-19=8150+408-57=401271+811-598=484721×(476-473)=2163953-(287+657)=9128+159+163=4502/4-1/4=1/4147×(30-26)=588983-730=253150+134=28487+226-159=154971-597-341=33922-(387+454)=8116×(349-342)=112168×2=336834-56-724=54788-190=598270-39=23125×(399-394)=125236×9-601=1523769-(186+127)=456248-(283-124)=89111+132+116=359285-235=50268+170=438292×2+128=712882-788+982=1076169+686-10=845447-(497-193)=143237-232+457=462391-(57+197)=137994-353-470=171711-(519-422)=614457-(410-10)=57763-458+400=705559+(569-54)=1074128×5+331=971629-560=69345-104=241807-134=67324+289-167=146162×6+363=133598-(339-330)=89436+131+381=948621-11×3=588262+27-140=149457+411+78=946970-(13+290)=667482×2=964489-217-260=12636-(759-174)=51838+883-557=1164414-53×3=25560+366-375=51784-109-223=452285-257+302=33098×(148-140)=784809+524-886=447278+(970-181)=106795×8=760830-57-699=7484-(468-394)=10762-171-535=56808-567=241676-(651-603)=62863+(465-387)=141261×(239-230)=2349489-24×8=2972/6+3/6=5/6355+(168-143)=38076×6=456584×(270-261)=5256806-(307+443)=56276+175-45=406820×6=4920163+59=222897-39×2=819753+430+540=1723183×4=73241×9+206=575196×5-580=40055+(218-120)=153230+118×6=93814+926+30=970187×3=561228-193=35639-(275+194)=170467+36×3=57520×(950-941)=180896+729-904=721107+170+97=374359-288=71365-(93+124)=1486/9+3/9=1121×4-480=4897-(491-423)=829119+208=327570+161+668=1399397-61-27=309164+176=340426×6=2556486+572=1058223×5-181=934485-(291+50)=144982+(294-77)=1199151+340=491116×3=348477-128×3=93118+116=234590+(487-229)=848307-96=211393-(473-414)=334298+120×2=538534-(261+169)=104580+360=940510-85×2=340275-140=135155+343=498367-(356-12)=23308+72=380150-138+112=124306-26×3=22889+205=294403+309=712494-146-306=42873-697=176591-23+59=627169-35+743=877361+(941-728)=574349+63+532=944364+92-289=167376-357+27=46945-673-118=154179+211=390243+454+729=1426681-506=17538+51=89154×4-237=379170×3+435=9453/7+2/7=5/7968+(791-49)=1710724-289-153=282234-16×4=170846-490=356598×2=1196740×(655-648)=5180378+642-564=456983×(632-625)=6881180×6=1080193+484+720=1397488-(37+131)=320125×4-327=1733/6-2/6=1/6168+90=258269-137+265=397187+146×5=917307-12-262=33482-409+281=35460+401+217=678689+160=849300+15×3=345473+(436-225)=684365+952-550=767358-275=83285×2-360=210657+247=9045/10+2/10=7/10240+100-191=149910-646+822=1086431+196×3=1019883-(737-332)=478409-18×9=247297+765-424=638460+117+153=730250+(78-49)=279412-89×3=145478-84×2=310896-616-100=18028×9=25248+241-29=260447+883-274=1056794-(96+523)=175605-136-234=235316×2-619=13862-(572-311)=601218-(122+19)=7737+30+86=153359-252-14=93330+57=387381-51+65=395464-(430-95)=12984+786+89=959619-(65+181)=373144×4+283=859816×8-483=6045397-43×3=26850+85+390=52536×3-66=4296×3=288653+(405-185)=873493-44×7=185359-42×4=191291+414=705889+646+494=202959×5=29590×(47-42)=450322+79×8=954467-44×3=33524×8=192440×(323-319)=1760234×(277-274)=702567+225+48=840745-(87+512)=146799-(283+95)=421881+967+458=2306200+224-237=187481-(201+229)=51931-110-366=455959-(405+419)=135484-(291+68)=125713+426=1139235+(286-258)=26344×4+316=49215×6=90383×6-926=1372340-242+232=330242-(101-16)=157357-(339-141)=159362+428+188=978534-155+210=589440-(205+10)=225610×2-13=1207228+262+409=899328+(458-254)=53292×6+993=1545366+95×6=936940-285×3=85306×(545-542)=918418×2-30=806611-42×8=275316-(52+219)=4571×8-234=334171+195=366681-471=210174×4=696264-214+167=217426-199=227372×2-503=241565-(330+95)=140811+(278-84)=1005486-(264+172)=50788×6-313=4415385×2+363=1133123+319-110=3325/7-1/7=4/7187-161=261/8+6/8=7/8167+256-94=329711×(375-366)=6399437-370+371=438820-459+542=903218+177=395122+36=158429×6=2574458-285+83=256444-(445-36)=35426-(264+20)=14228×(391-388)=84131+206=337327+55×9=822265+828-786=307625-(95+320)=210107×(287-278)=963406-148-28=230251-54×2=143387-(493-213)=107464-75×5=89950×(247-244)=2850497-(135+232)=130777-716+105=166465-197=268921×(618-611)=6447233+374×2=981326-(91-32)=267947-453-170=324491-(472-263)=282278+462+75=815727×(616-609)=508968×(80-73)=476630-48=582217+(470-55)=632476+96×3=764736×(123-117)=4416142×(482-