1.25X0.25X3.2简算

问题描述:

1.25X0.25X3.2简算

=1.25X0.25X0.8X4
=1.25X0.8X(0.25X4)
=1X1
=1

1.25X0.25X3.2
=(1.25×0.8)×(0.25×4)
=1×1
=1