[51O一(150十120)]÷16,用简便方计算?

2025-03-20 03:44:40
推荐回答(1个)
回答1:

[51O一(150十120)]÷16
=(510-270)÷16
=240÷16
=240÷(8x2)
=240÷8÷2
=30÷2
=15