计算下面各题(能简便计算的,用简便方法计算).25×16+105÷21 750÷[25×(312-309)]46×26+26×548

2024-11-10 21:55:16
推荐回答(1个)
回答1:

(1)25×16+105÷21
=400+5
=405
  
(2)750÷[25×(312-309)]
=750÷[25×3]
=750÷75
=10

(3)46×26+26×54
=(46+54)×26
=100×26
=2600

(4)83×101-83
=83×(100-1)
=83×100
=8300