222×111+111×444的简便运算
问题描述:
222×111+111×444的简便运算
是222×778+111×444的简便运算
答
222×778+111×444
=2x111x778+4x111x111
=2x778x111+2x222x111
=2x111x(778+222)
=222x1000
=222000看上面的,我题目打错了