248乘以199+248怎么用简便方法算

2026-05-18 22:41:56
推荐回答(2个)
回答1:

248x199+248
=248x(199+1)
=248x200
=(250-2)x200
=250x200-2x200
=50000-400
=49600

回答2:

248x(199+1)
=49600