Question

2.5×0.16×12.5递等式计算怎么简便？

Answer 1

此题运用乘法结合律计算，2.5×0.2×（0.8×12.5）=0.5×10=5

Answer 2

2.5x0.16x12.5
=2.5x(0.4x0.4)x12.5
=(2.5x0.4)x(0.4x12.5)
=1x5
=5

Answer 3

=2.5*（0.2*0.8）*12.5
=(2.5*0.2)*(0.8*12.5)
=0.5*10
=5

Answer 4

2.5×12 =3×12-0.5×12 =36-6 =30 存疑请追问,满意请采纳