Question

2.5×3.2×40×0.5简便运算？

Answer 1

(2.5×40)×(3.2×0.5)=100×1.6=160

Answer 2

2.5×3.2×40×0.5 = 100x1.6 = 160

Answer 3

2.5×40×3.2×0.5
=100×1.6
=160

Answer 4

=（2.5*40)*(3.2*0.5)

Answer 5

2.5.40.3.2.0.5