Question

222×55+666x15怎么简便运算

Answer 1

222×55+666×15
=55×222+222×3×15
=222×55+222×45
=222×(55+45)

=222×100

=22200

Answer 2

=222*55+222*3*15
=222*55+222*45
=222*（55+45）
=222*100
=22200