67乘99 简便运算.
问题描述:
67乘99 简便运算.
答
67×99=67×(100-1)
=67×100-67×1
=6700-67
=6633
67乘99 简便运算.
67×99=67×(100-1)
=67×100-67×1
=6700-67
=6633