1000+999-998-997+996+…+104+103-102-101=( )
1000+999-998-997+996+…+104+103-102-101=( )
日期:2022-04-09 07:22:07 人气:1
1000+999-998-997+996+…+104+103-102-101,
=(1000+999-998-997)+(996+995-994-993)+…+(104+103-102-101),
=4×225,
=900.
故选:B.
=(1000+999-998-997)+(996+995-994-993)+…+(104+103-102-101),
=4×225,
=900.
故选:B.