Question

Tính nhanh:

18,72 x 6 + 9,36 x 4 - 4,68 x 12

 

Answer 1

= 18,72 x6+9.36x2x2-4.68x4x3

=18.72x6+18.72x2-18.72x3

=18.72x(6+2-3)

=18.72x5

=93,6

Answer 2

\(18,72.6+9,36.4-4,68.12\)

\(=18,72.6+9,36.2.2-4,68.4.3\)

\(=18,72.6+18,72.2-18,72.3\)

\(=18,72\left(6+2-3\right)\)

\(=18,72.5=93,6\)