99加99乘99,脱式简便计算

99加99乘99,脱式简便计算
2024-11-30 18:48:31
推荐回答(2个)
回答1:

=1✘99+99✘99
=99✘(1+99)
=99✘100
=9900

回答2:

99+99×99
=99×(1+99)
=99×100
=9900