1.25×10.8-1.25×1.8-1.25的简便方法？

Question

如题所述

Answer 1

=1.25x10.8-1.25x1.8-1.25x1 =1.25x(10.8-1.8-1) =1.25x8 =10

Answer 2

1.25（10.8-1.8-1）=1.25*8=10