Tính nhanh. (1 điểm) 8,75 × 3 + 90,35 × 3 + 90/ 100 × 3

              8,75 × 3 + 90,35 × 3 + \(\frac{{90}}{{100}}\)× 3

= (8,75 + 90,35 + 0,9) × 3

                                                = 100 × 3

                                                = 300