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841-(220+331)=576-323+866=127×8-523=446+321+92=349-197-151=18+(429-357)=345×2=167×3+143=135×5+532=883+(314-148)=750×(719-715)=381-(50+199)=463-(107+28)=594-(676-367)=377-(400-374)=313-(109+17)=232-(248-154)=785-(707-108)=496-46×2=269-238=386-97-226=129×9=202×3+963=289+315+291=199×3=474+60×8=212-(364-180)=140-(275-140)=436-(587-571)=429-(116+21)=458-263=485×9=145+(336-228)=668+(505-427)=122+115=380-72-119=614-89+943=796-450+762=104+131=297+278+453=423-138-132=329+181+322=145+186-269=379-148=169-(452-412)=380-32×6=841-(735-599)=341+56-324=185+109=246+876-683=636-(860-332)=416-66-60=69+18=475-303+733=103×7+33=302+157=685×6=49×9=401-34×4=77+(173-113)=907-(215+16)=144+82=916-689=403-330+385=621+123=962-362-191=125+(225-70)=360+141×3=373-(171+87)=411-12=587+270=350+(438-184)=99+(254-185)=319-136=483+(463-177)=721-660+176=844×(719-716)=226-(261-80)=287×3=244-(518-315)=547-34+44=644×6-305=434+263+129=86×9=11+(314-121)=841×(320-316)=213+212-57=500-(93+14)=472-(326-196)=877×(791-784)=328+106×3=204-(141+40)=648-82+61=931-(694+139)=664-580+701=118+363=213+247+527=622+88+180=406-24×6=108+240-338=73+373+28=170+97-29=48×(18-11)=468-(257+135)=1/7+2/7=169-(172-104)=62+866+149=408-406+70=227×7-262=788+(656-226)=195+183-248=4/8+2/8=512+131×5=112×7-224=87×3+276=360-(460-161)=147+681=115×2=997×6=361-(125+203)=873×(34-30)=38+89×7=94+172-13=193+65+212=269+60×6=773-356=693+676-656=869×(633-627)=659-207×2=980+(889-512)=546-127=190+934+834=744-(415-225)=110×8-201=107+214=272-134=232×4+354=409-163-88=442-(306-176)=467+873+631=371-207+968=802-(219-12)=427-270-101=580-(506-116)=958+647+782=913×8=279-47×4=795-(473+107)=162×2+392=253+140=177-(328-273)=313-(428-157)=67+(244-87)=112+28+575=519-500+962=210-21=94+589+309=426-60×5=593+(913-623)=513×(235-226)=239×(404-400)=224+180=878+573-160=264-(163+80)=849-(486+98)=137×(238-231)=419×2-285=780-(853-431)=47+31=218+84-140=455-92-49=167×5+148=654-477=840-102×4=37+100=106-21×3=763-(358+34)=983-(677+280)=619×8-919=928-91-759=690+35-324=305+(228-80)=713-81×2=366-(381-22)=473-54×2=330-(475-314)=140-(87-28)=681×3=167-137+162=467+(339-280)=545×(457-453)=42×2+312=96+(762-52)=113+372-155=590+502-830=802×5=185×6=39+271-194=979+(723-312)=834+(687-283)=51×8-29=118×2=205+40+383=710×7-603=442-186-145=23+315-160=168×5+395=815+205-572=152-127=666+127=40×(472-463)=985-(410+43)=431-(766-497)=753-431-252=28×6+418=517×8=759+(966-152)=104+235+109=924×(980-972)=354+319=332+94-324=95+298-286=117×8+178=701+172+89=35×7+46=470×(620-614)=304-(355-127)=138+326-442=966-132×4=393-(128+99)=906-(374+488)=260-29×3=317×3-573=455-373=249+159×2=375-11×4=313×8-527=380-339+817=437×(532-528)=129×(405-400)=480-(50+358)=296×3=225-(430-344)=232+595+123=250-226+542=461-70-298=96+732+62=717+229=783-(236+374)=55+43×2=993-968=948-929=188+(269-70)=651+839+599=627+198-93=261×2=287+600+987=497+69+377=157×4-18=486×5=280+38+469=367-274-34=3/7+4/7=502-61×2=601+213-776=61+184+659=627-241-221=638-(960-362)=28-20+33=287-99=895-63-405=212×4-445=118+166=116+(747-421)=203-166=143×5=454-170=542+510=151-35+151=749-(996-248)=270+978-929=750+960-545=69×9-566=53-11×2=214-59+222=305×7-874=424+222×2=4/7+2/7=626+(563-527)=441-(120-72)=39+316+26=431-(675-587)=387-39×5=214×2=995-907+308=386+372=964+401=334-11×6=109×(62-56)=97+241=270-110+53=927+902+61=565×7-914=222-(146-142)=446×4=446-83=85+559+292=390-309+399=970-112-839=407-28-333=431-(342-213)=433-151=47×3=70+72×5=335-(90+101)=830-(589+52)=484-(727-710)=1/5+3/5=183+191×5=452-71×2=442×8=860-(332+404)=195-62-126=40×(20-13)=958-(708-222)=251-(297-154)=280+157=527×6-913=296-34×8=84+46×2=64×(227-224)=49×3=80×5+265=408-(217+179)=842+(660-624)=189+23×5=634×2=249-205+65=481-369+281=321-39×3=34×3+687=333×(181-178)=994+719=260-167=668-(881-825)=118×5-429=798-316=422-251-74=438-147=412×7-87=113+192-305=462+(294-39)=100×4+248=584+124+135=945+(292-36)=115-37×3=395×(602-594)=497-57×2=564+337-550=401+(925-244)=481-35×5=884-470-305=122×2=410-(72+66)=64×4+331=228-146+305=44×7=514×6-701=192×6-546=985-(48+842)=73×5-140=500×2-145=123+154-178=298-(342-259)=262×5-303=232+182-121=93×7+187=137×6=142×5-280=979+572-665=415×(402-395)=49+44×6=593×3=106×9-623=238-182=436+43×5=2/4-1/4=154+166-167=13+307+85=104×(412-403)=1/6+3/6=116+493=604+197×5=99×2=21×3=217×3-324=69+412=835+663+283=344-117-83=428-42×9=469-(55+156)=832×(348-345)=220+(490-387)=479-(502-406)=809-(70+195)=362-91+143=954-147×6=405-(474-399)=322-74=889-28+977=11×(280-274)=662+292+763=478-319+301=499-(44+73)=94-34+265=652-(609-141)=294-(41+174)=5/8-1/8=524-14×5=483+175=123×2=442+194=943-429-308=432-34-257=391+532=350-154+477=48×(452-448)=227-24×6=425-332-89=854-(925-569)=366-11×3=787×5-682=766+82+58=163×2=238+(360-76)=190+465+66=887-289+923=572-45×4=358+82-209=849-53=791-29-614=739-565=205+304=20×9+296=3/6+2/6=368+17+290=53+335-285=239-151-62=149-148+237=50+73×4=231-187+37=821+190=114-(446-373)=170+135=165-136+206=378-(12+232)=944-126-350=11+420+264=362×6=603-21×8=866×2-224=4/10-2/10=888-27+488=271-150+232=230+246-243=590+(431-203)=758-(46+71)=292×(485-482)=169×3=404-48=85×5-355=401+235×2=102+273×2=345-66-86=133+254+184=40×(291-283)=196-19×9=397-(938-760)=572-197×2=814-51×2=621×9-771=371+137×3=448+609+517=71×6=71+40=628+205+65=167×3-500=451-(23+336)=490-331=453-247=3/8-1/8=1/6+4/6=373-39×5=194×(78-73)=379×2+332=3/7+2/7=423-(12+159)=179+401-238=262-38×2=744+70+306=830+288-117=163×2+356=66×3-132=241-15×4=495-50-76=869-222=3/5+2/5=911-655-152=288-(309-106)=173-141+227=248-120=62×4+381=296×9-406=652×5=191-48=323-40-181=254×(58-55)=225-(68+49)=808+227-120=597-352+917=447+179×3=537-(514-361)=918-150-327=266×2-389=96+388+107=349-235-80=888-34-352=490-38=950-(176-112)=554-289=484-114=201+150=466×2=90×5=200+106=47+812-486=958×(388-380)=817-255+139=258-169=2/8-1/8=129×3=239×(222-216)=999+118×3=838-(468-264)=655×5=77+511+234=89×9+765=400-21×2=282+78-134=342-57×5=799-293-364=166+(208-188)=257+244×2=221×(236-233)=316-124-82=585-463=536-(377+58)=184+73-12=110×5-150=372+(234-80)=540+681+611=204-73=614-79-240=145+134×3=887-753=1/7+6/7=349+122=106×(94-89)=205×4-689=831+790=404-27×6=91+82=178-(265-157)=235×(687-679)=971-(53+348)=258+420+154=655+242+506=104+(199-110)=55+100=167+176=984×7=212-(300-99)=895+263-310=422-309-77=903×(350-347)=600+583-257=2/6-1/6=358-172-20=179×4=481-327-75=81+(426-213)=409-(137+23)=429-192=381-148-110=753-653+223=717×7-414=35+30+842=655-362-259=650-(388+237)=172×(125-122)=305+740+472=237×(397-394)=831-327-352=357-321+27=208×2=696-61×9=815+(850-643)=143×(235-229)=943-18+558=816-(397+230)=513×2-825=197×5=879-497=384-(374-54)=836-11×8=96+295=435-175=420-(387-136)=678+(818-441)=37×9=319+(595-398)=26+76=259×(772-763)=28×(60-57)=205-47×4=3/8-2/8=416+(135-70)=262×3-771=967+803-79=337-222+331=158-48+172=728-51-547=352-129=464-33×2=366+186+229=720×7-824=459-458+466=300-153-30=441-49=150+157=130×(129-126)=371+(466-137)=92×(290-282)=196×4-644=829-116=154×(159-153)=703+476-84=624-(77+439)=512-364=479-206+40=444-(148+23)=880+123-545=869+318+589=395-(331-168)=255×2-69=786+27-438=776-321-246=991+132+31=24×7+157=538-285=469+826=402-360+423=444+(463-388)=335-277+158=11+444-224=621×9-975=309-(258+51)=821×9=240+(685-512)=187×4-506=358-194+334=58×3+72=134×7=332×2-571=319×2=166-59+59=412+(395-297)=72+399=408+781+210=830-(77+100)=424-235=679+339-548=951-400=126+(447-44)=242-180+414=167+(978-463)=242×(164-161)=273×3-569=73+(289-256)=709×(337-330)=871-25=195×(463-459)=527-(370+64)=318+896=542×(241-237)=84×8=313+106=578×4=352-165×2=468-(217+192)=449-185-127=313×(279-274)=157+366+384=421-(325-171)=156+668=362-82×2=785×5=304-23+128=3/7-1/7=451+215=975-276=999-439=288+132-69=441-(279+19)=97×5=516+145×2=353×2-280=466-(60+253)=229×6-311=119+334=305-(150+104)=262×3=949-116-30=999+169-750=462-42×2=324-(481-469)=582-84=859×7=839-392+340=277-11×6=955×2=620-15-546=112×(120-113)=378-(94+108)=91+151=306+(307-186)=348-13×4=862-32-441=237×(189-185)=466-170=715-(604+10)=1/4+2/4=816-262-46=185+292-194=895+(480-118)=566×(149-143)=3/5-2/5=191+72+586=142×4-492=718-85×4=72+99-129=370+(313-223)=161-(17+57)=76×(209-206)=407+142×2=751-150=324-250=256×(147-141)=942+704+600=672-296=77+23+362=743-151×2=593+624+864=421+(643-508)=655+702+439=795-232+344=406-61-12=151×(213-209)=192+729-725=435-24×2=151×5-168=739+106×8=62+433-53=57×3+670=170+88-228=132+(63-33)=358+369=472+251+269=265-86-67=376-61×6=4/7-2/7=254-161-57=81+242-53=436×(560-556)=834-(550+244)=106+(442-108)=935-809+43=198+70×7=786+195-634=746×3-725=46×(75-72)=817-218×3=359-164×2=124+(960-766)=605-(190+300)=446+791-416=100-34+87=822-633+377=150×5-296=6/9-3/9=977-258+445=121+(906-838)=291-(179+42)=274×2=430×9-844=420-148-199=315-172-87=104×7=229+(126-106)=101+30=105+123=219+223+775=164×5+114=200-11×4=27+404-279=349+262=337+(890-803)=3/6-2/6=155×6-890=371-241-119=327-41×7=171-(113-92)=807-797+49=289+63=126-(319-250)=740+281+62=223×7-558=452-317+20=288+814-628=899-305-348=482×2-472=899-408×2=89×(493-490)=278×2-509=325+284×3=874-(220+91)=825-(715+58)=171+153×2=793+(484-160)=340-(301-251)=202-102+126=83×8-187=402-128=349×9-854=68×6+387=471-37×8=253×(764-760)=295×2+781=467-(148+79)=429-394=316+(685-37)=210+85=167+(477-75)=672+191=557-(469-442)=222+239-310=562+365=188+(500-434)=39×9=128+(329-304)=373-43×4=69×8+142=91×(97-92)=629-69-425=参考答案841-(220+331)=290576-323+866=1119127×8-523=493446+321+92=859349-197-151=118+(429-357)=90345×2=690167×3+143=644135×5+532=1207883+(314-148)=1049750×(719-715)=3000381-(50+199)=132463-(107+28)=328594-(676-367)=285377-(400-374)=351313-(109+17)=187232-(248-154)=138785-(707-108)=186496-46×2=404269-238=31386-97-226=63129×9=1161202×3+963=1569289+315+291=895199×3=597474+60×8=954212-(364-180)=28140-(275-140)=5436-(587-571)=420429-(116+21)=292458-263=195485×9=4365145+(336-228)=253668+(505-427)=746122+115=237380-72-119=189614-89+943=1468796-450+762=1108104+131=235297+278+453=1028423-138-132=153329+181+322=832145+186-269=62379-148=231169-(452-412)=129380-32×6=188841-(735-599)=705341+56-324=73185+109=294246+876-683=439636-(860-332)=108416-66-60=29069+18=87475-303+733=905103×7+33=754302+157=459685×6=411049×9=441401-34×4=26577+(173-113)=137907-(215+16)=676144+82=226916-689=227403-330+385=458621+123=744962-362-191=409125+(225-70)=280360+141×3=783373-(171+87)=115411-12=399587+270=857350+(438-184)=60499+(254-185)=168319-136=183483+(463-177)=769721-660+176=237844×(719-716)=2532226-(261-80)=45287×3=861244-(518-315)=41547-34+44=557644×6-305=3559434+263+129=82686×9=77411+(314-121)=204841×(320-316)=3364213+212-57=368500-(93+14)=393472-(326-196)=342877×(791-784)=6139328+106×3=646204-(141+40)=23648-82+61=627931-(694+139)=98664-580+701=785118+363=481213+247+527=987622+88+180=890406-24×6=262108+240-338=1073+373+28=474170+97-29=23848×(18-11)=336468-(257+135)=761/7+2/7=3/7169-(172-104)=10162+866+149=1077408-406+70=72227×7-262=1327788+(656-226)=1218195+183-248=1304/8+2/8=6/8512+131×5=1167112×7-224=56087×3+276=537360-(460-161)=61147+681=828115×2=230997×6=5982361-(125+203)=33873×(34-30)=349238+89×7=66194+172-13=253193+65+212=470269+60×6=629773-356=417693+676-656=713869×(633-627)=5214659-207×2=245980+(889-512)=1357546-127=419190+934+834=1958744-(415-225)=554110×8-201=679107+214=321272-134=138232×4+354=1282409-163-88=158442-(306-176)=312467+873+631=1971371-207+968=1132802-(219-12)=595427-270-101=56580-(506-116)=190958+647+782=2387913×8=7304279-47×4=91795-(473+107)=215162×2+392=716253+140=393177-(328-273)=122313-(428-157)=4267+(244-87)=224112+28+575=715519-500+962=981210-21=18994+589+309=992426-60×5=126593+(913-623)=883513×(235-226)=4617239×(404-400)=956224+180=404878+573-160=1291264-(163+80)=21849-(486+98)=265137×(238-231)=959419×2-285=553780-(853-431)=35847+31=78218+84-140=162455-92-49=314167×5+148=983654-477=177840-102×4=43237+100=137106-21×3=43763-(358+34)=371983-(677+280)=26619×8-919=4033928-91-759=78690+35-324=401305+(228-80)=453713-81×2=551366-(381-22)=7473-54×2=365330-(475-314)=169140-(87-28)=81681×3=2043167-137+162=192467+(339-280)=526545×(457-453)=218042×2+312=39696+(762-52)=806113+372-155=330590+502-830=262802×5=4010185×6=111039+271-194=116979+(723-312)=1390834+(687-283)=123851×8-29=379118×2=236205+40+383=628710×7-603=4367442-186-145=11123+315-160=178168×5+395=1235815+205-572=448152-127=25666+127=79340×(472-463)=360985-(410+43)=532431-(766-497)=162753-431-252=7028×6+418=586517×8=4136759+(966-152)=1573104+235+109=448924×(980-972)=7392354+319=673332+94-324=10295+298-286=107117×8+178=1114701+172+89=96235×7+46=291470×(620-614)=2820304-(355-127)=76138+326-442=22966-132×4=438393-(128+99)=166906-(374+488)=44260-29×3=173317×3-573=378455-373=82249+159×2=567375-11×4=331313×8-527=1977380-339+817=858437×(532-528)=1748129×(405-400)=645480-(50+358)=72296×3=888225-(430-344)=139232+595+123=950250-226+542=566461-70-298=9396+732+62=890717+229=946783-(236+374)=17355+43×2=141993-968=25948-929=19188+(269-70)=387651+839+599=2089627+198-93=732261×2=522287+600+987=1874497+69+377=943157×4-18=610486×5=2430280+38+469=787367-274-34=593/7+4/7=1502-61×2=380601+213-776=3861+184+659=904627-241-221=165638-(960-362)=4028-20+33=41287-99=188895-63-405=427212×4-445=403118+166=284116+(747-421)=442203-166=37143×5=715454-170=284542+510=1052151-35+151=267749-(996-248)=1270+978-929=319750+960-545=116569×9-566=5553-11×2=31214-59+222=377305×7-874=1261424+222×2=8684/7+2/7=6/7626+(563-527)=662441-(120-72)=39339+316+26=381431-(675-587)=343387-39×5=192214×2=428995-907+308=396386+372=758964+401=1365334-11×6=268109×(62-56)=65497+241=338270-110+53=213927+902+61=1890565×7-914=3041222-(146-142)=218446×4=1784446-83=36385+559+292=936390-309+399=480970-112-839=19407-28-333=46431-(342-213)=302433-151=28247×3=14170+72×5=430335-(90+101)=144830-(589+52)=189484-(727-710)=4671/5+3/5=4/5183+191×5=1138452-71×2=310442×8=3536860-(332+404)=124195-62-126=740×(20-13)=280958-(708-222)=472251-(297-154)=108280+157=437527×6-913=2249296-34×8=2484+46×2=17664×(227-224)=19249×3=14780×5+265=665408-(217+179)=12842+(660-624)=878189+23×5=304634×2=1268249-205+65=109481-369+281=393321-39×3=20434×3+687=789333×(181-178)=999994+719=1713260-167=93668-(881-825)=612118×5-429=161798-316=482422-251-74=97438-147=291412×7-87=2797113+192-305=0462+(294-39)=717100×4+248=648584+124+135=843945+(292-36)=1201115-37×3=4395×(602-594)=3160497-57×2=383564+337-550=351401+(925-244)=1082481-35×5=306884-470-305=109122×2=244410-(72+66)=27264×4+331=587228-146+305=38744×7=308514×6-701=2383192×6-546=606985-(48+842)=9573×5-140=225500×2-145=855123+154-178=99298-(342-259)=215262×5-303=1007232+182-121=29393×7+187=838137×6=822142×5-280=430979+572-665=886415×(402-395)=290549+44×6=313593×3=1779106×9-623=331238-182=56436+43×5=6512/4-1/4=1/4154+166-167=15313+307+85=405104×(412-403)=9361/6+3/6=4/6116+493=609604+197×5=158999×2=19821×3=63217×3-324=32769+412=481835+663+283=1781344-117-83=144428-42×9=50469-(55+156)=258832×(348-345)=2496220+(490-387)=323479-(502-406)=383809-(70+195)=544362-91+143=414954-147×6=72405-(474-399)=330322-74=248889-28+977=183811×(280-274)=66662+292+763=1717478-319+301=460499-(44+73)=38294-34+265=325652-(609-141)=184294-(41+174)=795/8-1/8=4/8524-14×5=454483+175=658123×2=246442+194=636943-429-308=206432-34-257=141391+532=923350-154+477=67348×(452-448)=192227-24×6=83425-332-89=4854-(925-569)=498366-11×3=333787×5-682=3253766+82+58=906163×2=326238+(360-76)=522190+465+66=721887-289+923=1521572-45×4=392358+82-209=231849-53=796791-29-614=148739-565=174205+304=50920×9+296=4763/6+2/6=5/6368+17+290=67553+335-285=103239-151-62=26149-148+237=23850+73×4=342231-187+37=81821+190=1011114-(446-373)=41170+135=305165-136+206=235378-(12+232)=134944-126-350=46811+420+264=695362×6=2172603-21×8=435866×2-224=15084/10-2/10=2/10888-27+488=1349271-150+232=353230+246-243=233590+(431-203)=818758-(46+71)=641292×(485-482)=876169×3=507404-48=35685×5-355=70401+235×2=871102+273×2=648345-66-86=193133+254+184=57140×(291-283)=320196-19×9=25397-(938-760)=219572-197×2=178814-51×2=712621×9-771=4818371+137×3=782448+609+517=157471×6=42671+40=111628+205+65=898167×3-500=1451-(23+336)=92490-331=159453-247=2063/8-1/8=2/81/6+4/6=5/6373-39×5=178194×(78-73)=970379×2+332=10903/7+2/7=5/7423-(12+159)=252179+401-238=342262-38×2=186744+70+306=1120830+288-117=1001163×2+356=68266×3-132=66241-15×4=181495-50-76=369869-222=6473/5+2/5=1911-655-152=104288-(309-106)=85173-141+227=259248-120=12862×4+381=629296×9-406=2258652×5=3260191-48=143323-40-181=102254×(58-55)=762225-(68+49)=108808+227-120=915597-352+917=1162447+179×3=984537-(514-361)=384918-150-327=441266×2-389=14396+388+107=591349-235-80=34888-34-352=502490-38=452950-(176-112)=886554-289=265484-114=370201+150=351466×2=93290×5=450200+106=30647+812-486=373958×(388-380)=7664817-255+139=701258-169=892/8-1/8=1/8129×3=387239×(222-216)=1434999+118×3=1353838-(468-264)=634655×5=327577+511+234=82289×9+765=1566400-21×2=358282+78-134=226342-57×5=57799-293-364=142166+(208-188)=186257+244×2=745221×(236-233)=663316-124-82=110585-463=122536-(377+58)=101184+73-12=245110×5-150=400372+(234-80)=526540+681+611=1832204-73=131614-79-240=295145+134×3=547887-753=1341/7+6/7=1349+122=471106×(94-89)=530205×4-689=131831+790=1621404-27×6=24291+82=173178-(265-157)=70235×(687-679)=1880971-(53+348)=570258+420+154=832655+242+506=1403104+(199-110)=19355+100=155167+176=343984×7=6888212-(300-99)=11895+263-310=848422-309-77=36903×(350-347)=2709600+583-257=9262/6-1/6=1/6358-172-20=166179×4=716481-327-75=7981+(426-213)=294409-(137+23)=249429-192=237381-148-110=123753-653+223=323717×7-414=460535+30+842=907655-362-259=34650-(388+237)=25172×(125-122)=516305+740+472=1517237×(397-394)=711831-327-352=152357-321+27=63208×2=416696-61×9=147815+(850-643)=1022143×(235-229)=858943-18+558=1483816-(397+230)=189513×2-825=201197×5=985879-497=382384-(374-54)=64836-11×8=74896+295=391435-175=260420-(387-136)=169678+(818-441)=105537×9=333319+(595-398)=51626+76=102259×(772-763)=233128×(60-57)=84205-47×4=173/8-2/8=1/8416+(135-70)=481262×3-771=15967+803-79=1691337-222+331=446158-48+172=282728-51-547=130352-129=223464-33×2=398366+186+229=781720×7-824=4216459-458+466=467300-153-30=117441-49=392150+157=307130×(129-126)=390371+(466-137)=70092×(290-282)=736196×4-644=140829-116=713154×(159-153)=924703+476-84=1095624-(77+439)=108512-364=148479-206+40=313444-(148+23)=273880+123-545=458869+318+589=1776395-(331-168)=232255×2-69=441786+27-438=375776-321-246=209991+132+31=115424×7+157=325538-285=253469+826=1295402-360+423=465444+(463-388)=519335-277+158=21611+444-224=231621×9-975=4614309-(258+51)=0821×9=7389240+(685-512)=413187×4-506=242358-194+334=49858×3+72=246134×7=938332×2-571=93319×2=638166-59+59=166412+(395-297)=51072+399=471408+781+210=1399830-(77+100)=653424-235=189679+339-548=470951-400=551126+(447-44)=529242-180+414=476167+(978-463)=682242×(164-161)=726273×3-569=25073+(289-256)=106709×(337-330)=4963871-25=846195×(463-459)=780527-(370+64)=93318+896=1214542×(241-237)=216884×8=672313+106=419578×4=2312352-165×2=22468-(217+192)=59449-185-127=137313×(279-274)=1565157+366+384=907421-(325-171)=267156+668=824362-82×2=198785×5=3925304-23+128=4093/7-1/7=2/7451+215=666975-276=699999