42X[5720霧(103一88)]的简便计算方法?

2025-03-18 16:58:16
推荐回答(2个)
回答1:

42X[5720➗(103一88)]
=42x5720/15
=(14x3)x5720/(5x3)
=14x5720/5
=14x1144
=16016

回答2:

原式=42x(5720÷55)
=42x(5720÷11)÷5
=42x(520÷5)
=42x104
=42x(100+4)
=42x100+42x4
=4200+168
=4368