Question

tinh nhanh

0,9 x 95 + 1,8 x 2 + 0,9

Answer 1

=0,9x95+9,9x4+0,9

=0,9(95+4+1)

=0,9x100=90

Answer 2

\(0,9\times95+1,8\times2+0,9\)

\(=0,9\times\left(95+4+1\right)\)

\(=0,9\times100\)

\(=90\)

P/s tham khảo nha

Answer 3

0,9 x(95+1)+1,8 x2

=0.9 x96+3,6

=86,4+3.6

=90