Question

0.6×(0.5×3.9) 怎么简便计算?

Answer 1

0.6x（0.5X3.9）
=0.6X0.5Ⅹ3.9
=0.3x3.9
=1.17

Answer 2

=(0.6×0.5)x3.9
=0.3×3.9
=1.17

Answer 3

0.6×（0.5×3.9）
=0.6×0.5×3.9
=0.3×3.9
=1.17

Answer 4

=0.6×0.5×3.9
=0.3×3.9
=1.17

Answer 5

原式=0.6*0.5*（4-0.1）
=0.3*4-0.3*0.1
=1.17