2013-11-26
展开全部
排除两个加数调换位置,共有544个算式:103+469=572,103+479=582,103+579=682,103+649=752,103+749=852103+759=862,104+579=683,104+759=863,105+269=374,105+279=384105+387=492,105+629=734,105+729=834,105+837=942,106+279=385106+379=485,106+487=593,106+729=835,106+739=845,106+847=953107+249=356,107+385=492,107+429=536,107+486=593,107+835=942107+846=953,108+249=357,108+259=367,108+359=467,108+429=537108+529=637,108+539=647,109+247=356,109+248=357,109+258=367109+265=374,109+275=384,109+276=385,109+358=467,109+376=485109+427=536,109+428=537,109+463=572,109+473=582,109+528=637109+538=647,109+573=682,109+574=683,109+625=734,109+643=752109+725=834,109+726=835,109+736=845,109+743=852,109+753=862109+754=863,123+467=590,123+586=709,124+659=783,124+679=803125+478=603,125+609=734,125+679=804,125+709=834,125+739=864126+378=504,126+583=709,126+709=835,127+359=486,127+368=495127+409=536,127+463=590,128+367=495,128+376=504,128+409=537128+439=567,128+475=603,128+509=637,129+357=486,129+407=536129+408=537,129+438=567,129+508=637,129+605=734,129+654=783129+674=803,129+675=804,129+705=834,129+706=835,129+735=864132+658=790,134+568=702,134+586=720,134+658=792,134+675=809134+756=890,134+768=902,134+786=920,135+674=809,135+729=864135+807=942,136+584=720,136+709=845,136+754=890,136+784=920137+268=405,137+805=942,138+267=405,138+269=407,138+429=567138+509=647,138+564=702,138+652=790,138+654=792,138+764=902139+268=407,139+428=567,139+508=647,139+706=845,139+725=864142+367=509,142+596=738,142+695=837,142+763=905,143+586=729143+609=752,143+659=802,143+709=852,143+762=905,143+765=908145+692=837,145+763=908,146+583=729,146+592=738,146+807=953147+209=356,147+362=509,147+806=953,148+209=357,149+207=356149+208=357,149+603=752,149+653=802,149+703=852,152+478=630152+487=639,152+638=790,152+784=936,153
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