(1)   8.8×0.125 

     =(8×0.125)×1.1

     =1×1.1

     =1.1 (2)   7.25×0.35-7.25×0.25

     =7.25×(0.35-0.25)

     =7.25×0.1

     =0.725(3)   1.25×4÷1.25×4

     =(1.25÷1.25)×(4×4)

     =1×16

     =16

(4)   3.6×2.4÷0.4

     =8.64÷0.4

     =21.6(5)   7.2+15.6÷0.02

     =7.2+780

     =787.2(6)   (9.7+2.4)×0.75

     =12.1×0.75

     =9.075