54x87十 54x13。用简便计算?

2025-06-27 10:37:49
推荐回答(2个)
回答1:

简便计算
54x87十 54x13
=54x(87+13)
=54x100
=5400

回答2:

54×87+54×13
=54×(87+13)
=54×100
=5400