Question

[Nguyễn Huy Hoàng]

tính cách thuận tiện nhất

123,45:0,5+123,45:0,2+123 x 3

Answer 1

[I don't need you]

\(123,45:0,5+123,45+0,2+123\times3\)

\(=123,45\times2+123,45\times5+123,45\times3\)

\(=123,45\times\left(2+5+3\right)\)

\(=123,45\times10\)

\(=1234,5\)

Answer 2

[Nguyễn Đức Tuệ]

123,45:0,5+123,45:0,2+123x3

=123,45:\(\frac{1}{2}\)+123,45:\(\frac{1}{5}\)+123x3

=123,45 x 2+123,45 x 5 +123x3

=123,45x(2+5) +123x3

=123,45x7+123x3

=123x7 +0,45x7 +123x3

=123x(7+3)+0,45x7

=123x10+0,45x7

=1230+ 3,15

=1233,15