三位数减法844+932= 199+398= 801+60= 814+551=75+505= 481+21=665+1000= 729+808=306+812= 28+911= 263+206= 644+64=537+385= 310+534= 861+146= 558+321=502+957= 857+423= 459+86= 473+577=733+530= 139+312= 323+291= 387+833=964+103= 686+936= 921+231= 302+355=195+676= 968+825= 519+171= 216+612=160+248= 515+449= 118+377= 865+868=797-338= 716-316= 983-327= 825-332=548-430= 783-460= 898-584= 830-54=979-605= 897-727= 750-253= 659-567=577-545= 641-353= 940-456= 979-488=680-502= 637-631= 911-75= 876-648=599-481= 834-776= 569-366= 975-883=894-862= 958-669= 765-246= 804-396=190-107= 787-182= 996-819= 298-291=977-253= 896-231= 960-39= 537-309=844+932-226199+398+456801+60-78814+551-45075+505-320481+21-420665+1000-133729+80-233306+812-56228+911-78263+206+352644+64+123537+385-230310+534-368797-338-274716-316-274983-327+368825-332+368548-430+368783-460+368898-584+123830-54+368979-605-274897-727+123750-253+368659-567-274577-545+368641-353+123940-456+368979-488+143876-648+123599-481+368680-502+368637-631+143911-75-274834-776+247569-366+247975-883+143894-862+368958-669-199
995-775= 985-807= 136+471= 345+427=622+190=437+270= 683+181= 903-786=81+519= 525-412=736-675= 461+433=833-732= 961-600= 718-608=188-14=166+262= 419+489= 811-796=230-177=275+421= 395-46= 487-35=391+589=252+6=696+266= 856-213=999-921=220-3= 397+455=256+728= 726-501=168+750= 694-149= 651-615=332+384=361+331= 515+483= 156-25= 878-128=423+493= 867-387= 711-17= 803-408=707+220=568-309= 59+583= 494+264=971-508= 407+320=771-419= 443+286=893-818= 654+184= 829-10=182+465=715-594= 38+241= 277+566= 630-341=929-611= 214+739= 299+437= 476-68=459+339=334+491= 313+478= 376+373=305+63= 824-224=432+316= 469+293=202+764= 209-96= 179+686=145-117=391+416= 910-284= 557-401= 435+481=473+425= 662-523= 380+480= 430+457=792-234=39+497= 492+85= 74+273=935-690= 380+475=540+448= 683-604=476+451= 138+81= 469+412=225+675=433-21= 321+416= 298+600= 718+174=800-400= 1400-200= 300+600= 800-50=400+300=1000-400= 300+500= 900-650=500+900= 900-700=300-200= 810-466=445-277= 356+626= 865-578= 445+385=1000-455=345+543= 957-679= 531+975=
987-799=342-274=258+553= 445+369=468-389= 457+368=597+324=385+247=978-199= 467+333= 258-168=275+345=300-110= 170+244= 520-155= 369+470=1000-333= 246+357= 270-144= 356+543=820-278=285+369= 700-264= 378-197=485+522= 474-179=468-357= 569-367=358+531=785-436=579-436=258+648=467-358=258-138= 653+259=368-233=136+845=357+458=480+475=531+329=528+462=564+328=419+457=408+387=344+485=249+458=775+228=128+719=182+798=713-548=334-237=404-358=433+418=306+405=338+169=427+584=876-448=433-218=517-85=800-736=516-368=680-475=532-329=784-348=536-176=624-518=807-396=340-180=704-648=300-180=800-718=500-408=317-209=547-477=819-368=833-747=414-96=403-208=300-89=400-265=357+457=714-417=375+148=213+189=320+184=375-148=213-189=320-184=437+163-246=800-143+96=270+80+20=385-85-120=170+124+30=343-150-143=359+120+180=125+183+75=900-427-373=500+378-527=479+494=743-457=627+379=425+356=830-315=451+362=576+141=518+387=537-238=900-694=490+105=189+411=800-524=247+153+219=327+175-308=813-345+190=369+221=425+106=
718+174=112+128=109+158=135+147=632+188=579+234=389+412=360+270=438+276=542+199=239+375=167+145=135+278=619+186=348+572=398+502=411+379=98+276=386-239=485-294=618-309=508-197=397-285=886-277=176-48=236-115=343-228=683-567=483-960=412-233=564-289=791-462=463-374=545-178=611-244=825-278=430-284=632-536=725-387=530-254=873-467=312-184=184-128=308-127=430-323=767-500=834-289=803-637=780-303=627-494=539+341=829-578=603-454=187+506=933-256=600-339=328+486=700-257=397+208=706-354=624-456=800-189=364+339=501-205=657-283=430+189=800-211=364=287=437-258=901-342=705-348-156=98+342+457=736-248=456+186=900-376=579+168=364+278=600-148=357+289=700-234=633-378=808-294=518-219=961+39=235-175=328+471=804-165=862-457+168=486-99=394+108=506-137=339+257=763-88=458+279=696+187=968-713=813-597=664-382=902-536=825-357=910-407-343=530+358-527=459+414=703-457=627+349=425+386=830-375=451+392=536+141=528+397=517-238=950-694=490+105=189+411=800-524=247+153+219=
357+185-308=803-375+119=379+251=465+706=758+178=146+128=129+158=175+147=672+188=534+284=379+418=349+260=49+236=249+179=256+373=148+159=