Question

tính nhanh \(0,36\times630+0,6\times36\times6+3,6\)

Answer 1

\(0,36\times630+0,6\times36\times6+3,6\)

\(=3,6\times0,1\times630+0,6\times3,6\times10\times6+3,6\)

\(=3,6\times63+3,6\times10\times6\times0,6+3,6\times1\)

\(=3,6\times63+3,6\times36+3,6\times1\)

\(=3,6\times\left(63+36+1\right)\)

\(=3,6\times100\)

\(=360\)

Answer 2

=3,6x63+3,6x36+3,6

=3,6x(63+36+1)

=3,6x 100

=360

Answer 3

\(0,36\times630+0,6\times36\times6+3,6\)

\(=3,6\times0,1\times630+0,6\times3,6\times10\times6+3,6\)

\(=3,6\times63+3,6\times10\times6\times0,6+3,6\times1\)

\(=3,6\times63+3,6\times36+3,6\times1\)

\(=3,6\times\left(63+36+1\right)\)

\(=3,6\times100\)

\(=360\)