79乘以99加99简便计算

79乘以99加99简便计算
2025-04-07 16:02:10
推荐回答(2个)
回答1:

79乘以99加99

=(79+1)×99
=80×99
=80×(100-1)
=8000-80
=7920

回答2:

79乘以99加99
=79*99+99
=(79+1)*99
=80*99
=7920