99×52怎样简便运算?
问题描述：
99×52怎样简便运算?
答
99×52
=(100-1)×52
=100×52-52
=5200-52
=5148
99×52怎样简便运算?
99×52
=(100-1)×52
=100×52-52
=5200-52
=5148