44×55+55×55的简便方法计算

2025-03-19 14:10:14
推荐回答(3个)
回答1:

原式
=55×(55+44)
=55×99
=55×(100-1)
=55×100-55
=5500-55
=5445

回答2:

44x55+55x55
=55x(44+55)
=55x99
=55x100-55
=5500-55
=5445

回答3:

原式=<44+55>×55
=99×55
=<100-1>×55
=5500-55
=5445