128×33减28×67的简便运算

128×33减28×67的简便运算
2025-12-25 02:59:43
推荐回答(1个)
回答1:

128X33-28X67
=100X33+28X33-28X67
=3300-28X(67-33)
=3300-(30-2)X34
=3300-1020+68
=3300-1000-20+68
=2348