683-473=167+745=347+599=957-507=366+445=679-466=637+263=572-213=727+144=73+900=576-140=18+237=242+558=562+392=556-107=773-481=490+436=544-257=128+612=24+796=598+372=754-612=768-200=593-136=847-469=540+278349-184=146+654=725+107=365-329=621- 226=203+575=418+362=854-657=131+784=599-68=671-102=786-51=224+542=370+547=220+350=100+735=391+355=988-303=343+590=535+229=595+304=579+226=535-414=3+613=455+310=947-680三位数加减三位数练习180+625=121+206=274+503=140-138=170+316=873-725=980-165=49+943=531+294=979-789=335-23=447-38=196-47=603-198=395+573=670+250=224+324=219-0=763-445=204+444=148+626=433+443=39+790=343+812=36+208=742+121=171-86=683+308=895-798=549+381=242+458=596-203=406-334=175+683=459+432=242+717=390+552=232-200=629-400=627-558=401+836=947-423=719-10=758-418=405-369=327-91=871-12=789+166=27+983=888-219=427-255=806-355=420+269=67+521=790+195=192+299=621+148=172+946=423+467=825-516=62+744=658+286=851-168=887-833=838+893=334+390=232+249=454-159=65+258=893-271=143+614=716-563=443-80=161+384=177+523=427+451=726-255=657+213=783+193=382+593=633-624=609-11=900-422=865-493=428+469=794+986=116+842=931-810=74+581=779-193=193+339=403+407=903-860=46+667=398+761=402+787=744-273=486+688=658+239=630-520=739+144=63+455=135+364=19+898=914-510=39+496=544+392=308-293=975-771=471-188=481-46=904-742=402-110=55+843=281+567=774-484=821-766=273+597=512-472=226-70=452+375=86+568=880-661=675+286=68+668=883-596=879-114=976-351=979-511=346-171=541+936=893+952=778-301=231+497=905-625=162+224=489-352=107+758=517-171=187+361=762-569=213+292=58+967=554-321=842-189=873-799=622- 62=875-540=986-46=641+883=660+779=600+761=559+687=133-103=650+731=117+372=384+961=333+827=262-102=372+577=13+371=73+659=624-361=905-528=845-467=786-200=243+119=774-725=500-252=974-722=504-146=736-651=532-175=579+955=411-306=777+800=207+859=341+605=13+212=741-705=934-515=717-684=59+288=855-411=691+958=688-211=424+856=160+627=270-186=798+981=37+406=527-143=980-636=711-363=409+998=280+314=882-42=730+961=183+593=184+378=424...
