199x48+199=? 的简便运算

2025-02-22 09:23:41
推荐回答(4个)
回答1:

199x48+199
=199x(48+1)
=(200-1)x49
=200x49-49
=9800-49
=9751

回答2:

199×48+199
=199×(48+1)
=199×(50-1)
=(200-1)×(50-1)
=200×50-200-50+1
=10000-250+1
=9751

回答3:

199×48+199
=199×(48+1)
=(200-1)×49
=200×49-49
=9751

回答4:

楼上答案清晰哦