45×99的简便计算

2025-03-13 03:13:22
推荐回答(5个)
回答1:

45×99
=45×(100-1)
=45×100-45×1
=4500-45
=4455

回答2:

45×(100-1)=4500-45=4455

回答3:

45*99=45*100-45=4455

回答4:

45*(100-1)=45*100-45=4455

回答5:

45×99
=45(100-1)
=45×100-45×1
=4500-45
=4455