巧算以下几道题,要求过程..
1个回答
展开全部
573-136-64-73+208+182
=573-73-(136+64)+(208+182)
=500-200+400
=700
127+125+126+123+129+122
=(127+123)+(125+126)+(129+122)
=250+251+251
=752
2663-874-1126+337
=(2663+337)-(874+1126)
=3000-2000
=1000
28534-18534-13967+12467+13017+2683
=(28534-18534)-(13967-12467)+(13017+2683)
=10000-1500+15700
=24200
274+448-317+326+552-283
=274+326+(448+552)-(317+283)
=600+1000-600
=1000
636-112-111+110+109-108-107+106+105-104-103+102+101-100-99+98+97-96-95+94+93-92-91+90+89
=636-(112-102)-(111-101)+(110-100)+(109-99)-(108-98)-(107-97)+(106-96)+(105-95)-(104-94)-(103-93)-92-91+90+89
=636-10-10+10+10-10-10+10+10-10-10-4
=636-10-10-4
=612
中意stp保温工程的回答,请采纳。
=573-73-(136+64)+(208+182)
=500-200+400
=700
127+125+126+123+129+122
=(127+123)+(125+126)+(129+122)
=250+251+251
=752
2663-874-1126+337
=(2663+337)-(874+1126)
=3000-2000
=1000
28534-18534-13967+12467+13017+2683
=(28534-18534)-(13967-12467)+(13017+2683)
=10000-1500+15700
=24200
274+448-317+326+552-283
=274+326+(448+552)-(317+283)
=600+1000-600
=1000
636-112-111+110+109-108-107+106+105-104-103+102+101-100-99+98+97-96-95+94+93-92-91+90+89
=636-(112-102)-(111-101)+(110-100)+(109-99)-(108-98)-(107-97)+(106-96)+(105-95)-(104-94)-(103-93)-92-91+90+89
=636-10-10+10+10-10-10+10+10-10-10-4
=636-10-10-4
=612
中意stp保温工程的回答,请采纳。
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