333×333
=(300+30+3)×333
=300×333+30×333+3×333
=99900+9990+999
=99900+(10000-10)+(1000-1)
=99900+10000+1000-11
=109900+1000-11
=110900-11
=110889
333×333
=(300+30+3)×333
=300×333+30×333+3×333
=99900+9990+999
=99900+(10000-10)+(1000-1)
=99900+10000+1000-11
=109900+1000-11
=110900-11
=110889