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283+49×8=803-108×3=51×8=400-155×2=169+69-55=166-35+241=389-(52+302)=5/8-1/8=1/9+8/9=68×2=149-61-88=532-177=74×2+230=25+450×2=848-303=317-(139+71)=15×(784-777)=484-48×7=281×2=12×2+13=450-246=198×5-872=981-262=293×3-242=677+114-687=225×(22-18)=668-(381-295)=136+100=589+350+173=401+46×2=69×7=224+217=332+592=80+644-305=600-(371-84)=315-172+213=119+103=730×3-796=609+664-385=453-(122+172)=478-296-158=795-76+330=714×3-422=367+146=635×(784-778)=447-(187+258)=904×(84-76)=359-171=318-56=161-(428-280)=809×4=723+513=814-(802-254)=183×3=599-(69+189)=918-(875-863)=831-(331+475)=444-361=21×(278-273)=97×(344-339)=418-(66+17)=432-(131+169)=311-218+62=154×(276-271)=18+320×2=24+440-314=354-191-31=41+36=533-258+64=409-316-82=444-(334-122)=689×(667-658)=172+(467-326)=424-215+151=151+135=788-504+444=221-150+374=113×(79-73)=804×(364-357)=701-457+284=561×3-804=304+172=192×(78-74)=920-122×5=445-59=478-335+356=997-395+872=452-(43+146)=414+375=120+345×2=436-(236+51)=986+536+864=866+606-885=91×(776-772)=276×3-282=382-282+197=501-487=514-23×8=618+354+43=514×2=125×8+939=289+130-49=461-394-36=98+(39-32)=400+342+257=340+(359-127)=179+657-304=302+56=94+206+278=531+562+964=538×2-509=109+212+679=57×2=796+(790-643)=902×2=472×2=707-188+290=469-229=399-(336-240)=401+762+948=990-398=661-(526+37)=458-123=89×3+369=361-(216-94)=470+(854-599)=318×3-687=13×2+463=630-26×5=439×3=214+81×5=819-71×9=855+301×3=294×2-401=2/4-1/4=130×(177-173)=875-(291-181)=409+(247-196)=808-99=903×3=596-371+486=226×2=187-(188-67)=881-94-498=322+58=170+(276-78)=25+453-95=385-196=675-185=222×(278-272)=179+(479-317)=138+46-70=948-628+579=334-25×9=240×4=733+660+400=213-179=946+(838-136)=249-(11+89)=909+257=913+(995-641)=20+780+668=152×(465-459)=17×(471-462)=871-270=248+388-589=4/6-1/6=94×9-334=745+153+976=849×6-288=265×8-696=180-(72-35)=430+358+161=379×2+135=92+138-147=26×(420-412)=687+245-428=99+147=276×4=173×2=379-378+298=524+144=865-60×7=387+(532-268)=352-(321+13)=499+413-136=99×(362-359)=899-34-449=212-(526-471)=228-(166+53)=233-212+238=4/7-1/7=798+725+426=764-245-132=56+25×6=78×7=707-368-283=948-145=294+106+222=337+65×4=360+429+202=442-220-134=4/9+2/9=412-33×4=78×9+646=265-156+123=70+(466-141)=1/3+2/3=163×6-283=199+173=829-31=347-287+382=780-(881-391)=809+907+530=482-101×3=637-(528+48)=314×3-815=869×2=244×4=428-(938-618)=451-61×3=365+70=357-23×7=2/8-1/8=8/9-1/9=28×6+391=171×5-508=674×(454-446)=294-71-205=152+322+188=923-761=797+946=11+(441-119)=366+126=222+58×7=218-33×4=941-260×2=431-24=366+212×3=510-347=991+438-881=902+108-685=498-315-148=630-(89+144)=17+(433-151)=452+(546-207)=415-(417-338)=884-(886-322)=305-16×5=716-(95+72)=416+(474-80)=982+25×8=682-146×2=585-342-115=274-(363-111)=422+(375-291)=564×4-441=367-265=96-27+45=948-(162+700)=183+274-190=428-(483-355)=897-(53+136)=908-406+85=222×8-886=211+(655-94)=95×3-276=290+350+245=275+123-37=328-138=170-93+350=774+428=573-189×2=927-77×7=325+108×5=346-83=86+395×2=623-454-155=122-100+335=381-(458-280)=945-28-700=727×7-624=93×(302-294)=46×(245-241)=386-(321+21)=253×(120-116)=166+113-147=572-551+884=288+50-121=237+(653-308)=195+250-41=751+460-536=459-417=694×(537-533)=350-141×2=629×(951-947)=429-128-46=899×(901-898)=14×4+315=57×7+258=423-212-46=210+(447-180)=633+388-346=11×(368-363)=921-666=124×8+350=265-93-74=115+726+13=489+(753-338)=96×4-296=497+286=238+(257-103)=907×9=654-(857-361)=803×4=963-(308+319)=320+153+185=765×7-429=450-42×5=234+240+877=185×(337-332)=478-(527-104)=518+(576-272)=417-19×2=64×(183-179)=560-198+176=755+193+457=105+500+149=385+41-43=939-297-571=138+171+344=92×8-667=54×(59-53)=937-321-338=391+584+419=251+928+573=207+280=422-92×2=492-58=147×6=6/9-3/9=444-(186+162)=221×(194-190)=714-(506-387)=341+(71-26)=254+(468-414)=194×2=346+287+391=418×2-599=851+(817-216)=319-252=733+44×5=731-(53+114)=163+177=420+212+117=404-(192+76)=307+126×2=336-121=236×3-117=434×2=46×5=27×(94-85)=120-27×4=311+81+132=78+520+184=154+482+135=10+(305-131)=400-55×5=498-157-91=775×6-911=149+94=211+(796-518)=441+140=247-(302-191)=750-(903-157)=411+49-386=883-(466-85)=568-15+263=862-68-777=909-134×4=30×6=990+275=491-418-35=73+208=708×(78-70)=319-57+123=406-(681-617)=549-529-18=13×9+52=135×5-69=206×4-626=262×2+679=379-(72+138)=751-107-429=1/5+3/5=375+(461-385)=146×5-455=502-25×7=290×3-763=179×6-721=198-177=521-371+968=137×(270-263)=1/9+5/9=162+625+454=325+79=53+412-175=168×5-663=262+664-766=155+276=788+947-916=382-(164-69)=528+92=348-(293-99)=209-58-85=264+57+453=852-98×7=41+147=476+(424-118)=218-28×4=885×8-252=747-196-392=36+386-323=222-(495-356)=321×2+48=28×(534-526)=149-21×4=359-58×5=845-(383-63)=118×7=473+(897-542)=93×3-129=315×(54-51)=89+23+757=525-443=294-107=620+385-791=154-18×7=672-74×6=602+105×5=1/5+2/5=63×(175-170)=112×3+69=63×3=998+814-722=251+170-99=205×4-636=449-(54-38)=289+185=459×5=1/4+2/4=120+(332-63)=99-91+446=957×3=39×3=134+(333-305)=173+371=280-192+336=316-37=620+192+47=113×9=774-440-189=4/7-2/7=722+24×5=31+(425-345)=354-298=204+122-71=833-(34+317)=868-(313-53)=167-153+263=889-300×2=3/5+2/5=94+287=89×6=172×2=327-(54+20)=939+601+791=188-133=126×(298-294)=109-11×8=66×4=420-277=2/6+3/6=175×2=584-(714-503)=727-666+435=127+(321-64)=109-39+206=246+(742-368)=405-240=101+(21-10)=903-(996-964)=487+51+255=107+324=117×4=501+200=94+257=239+231=222-53=204×9=233×4=122×(204-198)=26+(199-165)=125×4-483=152+(310-97)=371-57×5=485-13×3=133×2=13+358-185=491-(105+84)=810+277-423=436-(345+91)=915+558+384=413-(25+155)=677×5=77×3=80×(254-250)=477-189=482-118×3=178+96×4=351+(805-682)=214+(225-147)=323+105-307=62+364+453=38×9-290=211-165+107=275×6-143=151×(192-187)=529+118=621-248+859=322-136-170=621-(736-393)=123+(941-660)=429+(371-325)=260+148+464=482+342+109=473-13×7=383-170-148=147-(70-33)=230+108=426+173+79=370+(354-195)=603+644=355-186=995+21×4=898-313-128=210-27=395+(256-147)=53-16+183=180+158-109=696-44-616=758-21×6=717+(476-79)=495+821-37=770+(929-273)=332+21×8=404-117-254=158+215=192×8-445=592+85×3=324+67=984-(530+393)=343+88×3=827-197-620=583-(164+253)=596+148=698-637+731=194-14×8=430×9-656=875-159×2=385×(439-432)=6/8-1/8=223×4=239-92+396=912-(639-462)=40×(992-984)=453+722-527=312-240=226×(372-369)=787-343+649=197-160+189=266×2+39=259×(197-192)=485×8-413=870-(154+15)=845-177+325=474-17-355=366+100=78×7+103=311+180-468=356-(90+110)=819-(110+74)=158-66+228=794-93×6=442-(365-162)=466-(278+175)=382+(349-332)=460-24-382=396-33×2=916-458×2=748-417-129=187×3+456=214+684-345=459×(25-20)=873-391+465=402-62-123=129+369=3/7+2/7=375-282=486-(262+187)=800+(819-166)=418-177=5/8-2/8=78×9+18=117×7-181=305+106-211=386+(962-278)=138×3=748-(179+161)=73×2-112=207-(148-103)=486-137×2=419-(41+307)=486-(108+291)=645-241=88+466+420=11+423-82=68×(291-288)=236×4-125=278-45×5=629+782-105=22+107=447-280-18=459-384+245=173-30×4=618+575=457+114×2=708-34×4=400×4-773=411-66×2=953-482=74×8+332=344-11-308=354×(439-432)=277+128-26=54×4-43=818-169-131=347×4-870=82+35+399=498-(322-155)=414-260-18=948+284=876-848-14=259-(297-240)=428-52=498-153-201=713-(213+308)=786-311=632-413+429=100×5=868-554-19=866-(363+67)=398×2-134=418-56-152=483-107-13=795-(172+188)=705-(781-522)=231-45+16=210+375+30=666-(591-202)=270-(23+26)=927-450-351=210-68×2=637-(204+135)=549×2-152=385-222+249=603×(865-857)=632×5-336=373-158+11=667-46×4=779-60×5=164×3-41=937×(571-567)=845-(569-266)=833-349-353=858+203-698=208+39×8=415+(459-288)=201-(129+40)=17+(107-106)=405+392+135=351-(43+84)=67×5=342-236=482-46×5=261×(448-445)=965-(434+278)=49×7+105=500-48×7=569+83+228=405-294+146=414×9=449-124=256×(238-235)=671×(241-236)=397-20×7=372×2=109×8=370-181+471=240-239+780=758-354+458=124-(331-299)=45+313+588=515-456=289+461=3/7-1/7=225-40-139=155+205=170×8-67=174×4+124=785-(429+145)=384-121+184=961+244-76=759-(825-491)=291-147-101=95×8-692=316-93+119=247+(215-114)=288×3-323=437+252+222=400-109-169=846-(831-821)=849-(240+109)=755-97=793-225×2=250×3-393=422-(265+127)=845-442=86+109=581+130+718=827+662+672=172+109=90+43×8=421×8-879=150×5-129=31×(39-30)=218-(38-17)=379+33×5=535×6=435-(35-24)=739-192-429=357-92-159=745×6=735+335=221-(137-11)=703-356+947=1/6+2/6=409×2-715=677+(815-483)=337+(178-39)=998-143×4=121-(436-342)=757+758+856=651-(78+149)=303-(583-360)=108+912-161=809-256-549=720-584-123=473-380+310=376+41+265=94×7=290-(78+39)=855-654+412=796-(123+532)=3/8+4/8=385+62-315=289-(446-439)=430×2=760+(972-50)=603-15×5=235+386+23=155+32=79+297+394=325×9=616×7=204×4+661=364-37-119=505+(410-191)=62×(357-349)=859-449-299=980+870-683=458+247-190=482-(158+215)=386+572=81+22=207+54+131=705×4-886=433-(365+26)=569-(485+75)=96+284=649×(530-525)=639+51×3=306-90-110=79+227-142=111×7=134+460+115=323-(209-172)=421+818-217=203+235-208=155×3+184=653-81-282=108+311-244=54×(192-188)=26×2+236=133×(862-859)=59+128×4=139+(493-453)=984×(467-460)=110×6+319=378-(56+21)=976-832=620-(806-199)=470-(295-243)=467-(214-206)=189×5+599=655+526-812=212+(382-87)=267-10=414-48=258-218=419-271=407+74=314+29+36=36×4+49=508-369=125×(500-493)=548+830+601=485+894-706=633-52×9=3/6-2/6=482×2=438-(248-25)=55+171-177=497×(465-458)=653+648-104=790-92+499=531-199+671=290-(100+184)=343×9=161+(903-393)=156+412+428=200×5-699=912-650+61=289+36-154=119+97×6=28×4+345=170+367=159×3+416=83×4=149×6=455-(366-111)=155×6-437=372-(59-45)=633-(57+124)=参考答案283+49×8=675803-108×3=47951×8=408400-155×2=90169+69-55=183166-35+241=372389-(52+302)=355/8-1/8=4/81/9+8/9=168×2=136149-61-88=0532-177=35574×2+230=37825+450×2=925848-303=545317-(139+71)=10715×(784-777)=105484-48×7=148281×2=56212×2+13=37450-246=204198×5-872=118981-262=719293×3-242=637677+114-687=104225×(22-18)=900668-(381-295)=582136+100=236589+350+173=1112401+46×2=49369×7=483224+217=441332+592=92480+644-305=419600-(371-84)=313315-172+213=356119+103=222730×3-796=1394609+664-385=888453-(122+172)=159478-296-158=24795-76+330=1049714×3-422=1720367+146=513635×(784-778)=3810447-(187+258)=2904×(84-76)=7232359-171=188318-56=262161-(428-280)=13809×4=3236723+513=1236814-(802-254)=266183×3=549599-(69+189)=341918-(875-863)=906831-(331+475)=25444-361=8321×(278-273)=10597×(344-339)=485418-(66+17)=335432-(131+169)=132311-218+62=155154×(276-271)=77018+320×2=65824+440-314=150354-191-31=13241+36=77533-258+64=339409-316-82=11444-(334-122)=232689×(667-658)=6201172+(467-326)=313424-215+151=360151+135=286788-504+444=728221-150+374=445113×(79-73)=678804×(364-357)=5628701-457+284=528561×3-804=879304+172=476192×(78-74)=768920-122×5=310445-59=386478-335+356=499997-395+872=1474452-(43+146)=263414+375=789120+345×2=810436-(236+51)=149986+536+864=2386866+606-885=58791×(776-772)=364276×3-282=546382-282+197=297501-487=14514-23×8=330618+354+43=1015514×2=1028125×8+939=1939289+130-49=370461-394-36=3198+(39-32)=105400+342+257=999340+(359-127)=572179+657-304=532302+56=35894+206+278=578531+562+964=2057538×2-509=567109+212+679=100057×2=114796+(790-643)=943902×2=1804472×2=944707-188+290=809469-229=240399-(336-240)=303401+762+948=2111990-398=592661-(526+37)=98458-123=33589×3+369=636361-(216-94)=239470+(854-599)=725318×3-687=26713×2+463=489630-26×5=500439×3=1317214+81×5=619819-71×9=180855+301×3=1758294×2-401=1872/4-1/4=1/4130×(177-173)=520875-(291-181)=765409+(247-196)=460808-99=709903×3=2709596-371+486=711226×2=452187-(188-67)=66881-94-498=289322+58=380170+(276-78)=36825+453-95=383385-196=189675-185=490222×(278-272)=1332179+(479-317)=341138+46-70=114948-628+579=899334-25×9=109240×4=960733+660+400=1793213-179=34946+(838-136)=1648249-(11+89)=149909+257=1166913+(995-641)=126720+780+668=1468152×(465-459)=91217×(471-462)=153871-270=601248+388-589=474/6-1/6=3/694×9-334=512745+153+976=1874849×6-288=4806265×8-696=1424180-(72-35)=143430+358+161=949379×2+135=89392+138-147=8326×(420-412)=208687+245-428=50499+147=246276×4=1104173×2=346379-378+298=299524+144=668865-60×7=445387+(532-268)=651352-(321+13)=18499+413-136=77699×(362-359)=297899-34-449=416212-(526-471)=157228-(166+53)=9233-212+238=2594/7-1/7=3/7798+725+426=1949764-245-132=38756+25×6=20678×7=546707-368-283=56948-145=803294+106+222=622337+65×4=597360+429+202=991442-220-134=884/9+2/9=6/9412-33×4=28078×9+646=1348265-156+123=23270+(466-141)=3951/3+2/3=1163×6-283=695199+173=372829-31=798347-287+382=442780-(881-391)=290809+907+530=2246482-101×3=179637-(528+48)=61314×3-815=127869×2=1738244×4=976428-(938-618)=108451-61×3=268365+70=435357-23×7=1962/8-1/8=1/88/9-1/9=7/928×6+391=559171×5-508=347674×(454-446)=5392294-71-205=18152+322+188=662923-761=162797+946=174311+(441-119)=333366+126=492222+58×7=628218-33×4=86941-260×2=421431-24=407366+212×3=1002510-347=163991+438-881=548902+108-685=325498-315-148=35630-(89+144)=39717+(433-151)=299452+(546-207)=791415-(417-338)=336884-(886-322)=320305-16×5=225716-(95+72)=549416+(474-80)=810982+25×8=1182682-146×2=390585-342-115=128274-(363-111)=22422+(375-291)=506564×4-441=1815367-265=10296-27+45=114948-(162+700)=86183+274-190=267428-(483-355)=300897-(53+136)=708908-406+85=587222×8-886=890211+(655-94)=77295×3-276=9290+350+245=885275+123-37=361328-138=190170-93+350=427774+428=1202573-189×2=195927-77×7=388325+108×5=865346-83=26386+395×2=876623-454-155=14122-100+335=357381-(458-280)=203945-28-700=217727×7-624=446593×(302-294)=74446×(245-241)=184386-(321+21)=44253×(120-116)=1012166+113-147=132572-551+884=905288+50-121=217237+(653-308)=582195+250-41=404751+460-536=675459-417=42694×(537-533)=2776350-141×2=68629×(951-947)=2516429-128-46=255899×(901-898)=269714×4+315=37157×7+258=657423-212-46=165210+(447-180)=477633+388-346=67511×(368-363)=55921-666=255124×8+350=1342265-93-74=98115+726+13=854489+(753-338)=90496×4-296=88497+286=783238+(257-103)=392907×9=8163654-(857-361)=158803×4=3212963-(308+319)=336320+153+185=658765×7-429=4926450-42×5=240234+240+877=1351185×(337-332)=925478-(527-104)=55518+(576-272)=822417-19×2=37964×(183-179)=256560-198+176=538755+193+457=1405105+500+149=754385+41-43=383939-297-571=71138+171+344=65392×8-667=6954×(59-53)=324937-321-338=278391+584+419=1394251+928+573=1752207+280=487422-92×2=238492-58=434147×6=8826/9-3/9=3/9444-(186+162)=96221×(194-190)=884714-(506-387)=595341+(71-26)=386254+(468-414)=308194×2=388346+287+391=1024418×2-599=237851+(817-216)=1452319-252=67733+44×5=953731-(53+114)=564163+177=340420+212+117=749404-(192+76)=136307+126×2=559336-121=215236×3-117=591434×2=86846×5=23027×(94-85)=243120-27×4=12311+81+132=52478+520+184=782154+482+135=77110+(305-131)=184400-55×5=125498-157-91=250775×6-911=3739149+94=243211+(796-518)=489441+140=581247-(302-191)=136750-(903-157)=4411+49-386=74883-(466-85)=502568-15+263=816862-68-777=17909-134×4=37330×6=180990+275=1265491-418-35=3873+208=281708×(78-70)=5664319-57+123=385406-(681-617)=342549-529-18=213×9+52=169135×5-69=606206×4-626=198262×2+679=1203379-(72+138)=169751-107-429=2151/5+3/5=4/5375+(461-385)=451146×5-455=275502-25×7=327290×3-763=107179×6-721=353198-177=21521-371+968=1118137×(270-263)=9591/9+5/9=6/9162+625+454=1241325+79=40453+412-175=290168×5-663=177262+664-766=160155+276=431788+947-916=819382-(164-69)=287528+92=620348-(293-99)=154209-58-85=66264+57+453=774852-98×7=16641+147=188476+(424-118)=782218-28×4=106885×8-252=6828747-196-392=15936+386-323=99222-(495-356)=83321×2+48=69028×(534-526)=224149-21×4=65359-58×5=69845-(383-63)=525118×7=826473+(897-542)=82893×3-129=150315×(54-51)=94589+23+757=869525-443=82294-107=187620+385-791=214154-18×7=28672-74×6=228602+105×5=11271/5+2/5=3/563×(175-170)=315112×3+69=40563×3=189998+814-722=1090251+170-99=322205×4-636=184449-(54-38)=433289+185=474459×5=22951/4+2/4=3/4120+(332-63)=38999-91+446=454957×3=287139×3=117134+(333-305)=162173+371=544280-192+336=424316-37=279620+192+47=859113×9=1017774-440-189=1454/7-2/7=2/7722+24×5=84231+(425-345)=111354-298=56204+122-71=255833-(34+317)=482868-(313-53)=608167-153+263=277889-300×2=2893/5+2/5=194+287=38189×6=534172×2=344327-(54+20)=253939+601+791=2331188-133=55126×(298-294)=504109-11×8=2166×4=264420-277=1432/6+3/6=5/6175×2=350584-(714-503)=373727-666+435=496127+(321-64)=384109-39+206=276246+(742-368)=620405-240=165101+(21-10)=112903-(996-964)=871487+51+255=793107+324=431117×4=468501+200=70194+257=351239+231=470222-53=169204×9=1836233×4=932122×(204-198)=73226+(199-165)=60125×4-483=17152+(310-97)=365371-57×5=86485-13×3=446133×2=26613+358-185=186491-(105+84)=302810+277-423=664436-(345+91)=0915+558+384=1857413-(25+155)=233677×5=338577×3=23180×(254-250)=320477-189=288482-118×3=128178+96×4=562351+(805-682)=474214+(225-147)=292323+105-307=12162+364+453=87938×9-290=52211-165+107=153275×6-143=1507151×(192-187)=755529+118=647621-248+859=1232322-136-170=16621-(736-393)=278123+(941-660)=404429+(371-325)=475260+148+464=872482+342+109=933473-13×7=382383-170-148=65147-(70-33)=110230+108=338426+173+79=678370+(354-195)=529603+644=1247355-186=169995+21×4=1079898-313-128=457210-27=183395+(256-147)=50453-16+183=220180+158-109=229696-44-616=36758-21×6=632717+(476-79)=1114495+821-37=1279770+(929-273)=1426332+21×8=500404-117-254=33158+215=373192×8-445=1091592+85×3=847324+67=391984-(530+393)=61343+88×3=607827-197-620=10583-(164+253)=166596+148=744698-637+731=792194-14×8=82430×9-656=3214875-159×2=557385×(439-432)=26956/8-1/8=5/8223×4=892239-92+396=543912-(639-462)=73540×(992-984)=320453+722-527=648312-240=72226×(372-369)=678787-343+649=1093197-160+189=226266×2+39=571259×(197-192)=1295485×8-413=3467870-(154+15)=701845-177+325=993474-17-355=102366+100=46678×7+103=649311+180-468=23356-(90+110)=156819-(110+74)=635158-66+228=320794-93×6=236442-(365-162)=239466-(278+175)=13382+(349-332)=399460-24-382=54396-33×2=330916-458×2=0748-417-129=202187×3+456=1017214+684-345=553459×(25-20)=2295873-391+465=947402-62-123=217129+369=4983/7+2/7=5/7375-282=93486-(262+187)=37800+(819-166)=1453418-177=2415/8-2/8=3/878×9+18=720117×7-181=638305+106-211=200386+(962-278)=1070138×3=414748-(179+161)=40873×2-112=34207-(148-103)=162486-137×2=212419-(41+307)=71486-(108+291)=87645-241=40488+466+420=97411+423-82=35268×(291-288)=204236×4-125=819278-45×5=53629+782-105=130622+107=129447-280-18=149459-384+245=320173-30×4=53618+575=1193457+114×2=685708-34×4=572400×4-773=827411-66×2=279953-482=47174×8+332=924344-11-308=25354×(439-432)=2478277+128-26=37954×4-43=173818-169-131=518347×4-870=51882+35+399=516498-(322-155)=331414-260-18=136948+284=1232876-848-14=14259-(297-240)=202428-52=376498-153-201=144713-(213+308)=192786-311=475632-413+429=648100×5=500868-554-19=295866-(363+67)=436398×2-134=662418-56-152=210483-107-13=363795-(172+188)=435705-(781-522)=446231-45+16=202210+375+30=615666-(591-202)=277270-(23+26)=221927-450-351=126210-68×2=74637-(204+135)=298549×2-152=946385-222+249=412603×(865-857)=4824632×5-336=2824373-158+11=226667-46×4=483779-60×5=479164×3-41=451937×(571-567)=3748845-(569-266)=542833-349-353=131858+203-698=363208+39×8=520415+(459-288)=586201-(129+40)=3217+(107-106)=18405+392+135=932351-(43+84)=22467×5=335342-236=106482-46×5=252261×(448-445)=783965-(434+278)=25349×7+105=448500-48×7=164569+83+228=880405-294+146=257414×9=3726449-124=325256×(238-235)=768671×(241-236)=3355397-20×7=257372×2=744109×8=872370-181+471=660240-239+780=781758-354+458=862124-(331-29