Question

666x333+777x999怎么算

Answer 1

666x333+777x999
=666x333+777x(333+666)
=666x333+777x333+777x666
=666x333+777x333+667x666+110x666
=666x333+667x666+777x333+220x333
=(666x333+667x666)+(777x333+220x333)
=666x(333+667)+(777+220)x333
=666x1000+997x333
=666000+1000x333-3x333
=666000+333000-999
=999000-999
=998001

或者：
666x333+777x999
=666x3/2x2x333+777x999
=（666x3/2）x（2/3x333)+777x999
=999x222+777x999
=999x(222+777)
=999x999
=999x1000-999
=999000-999
=998001