Tính nhanh 54 × 450 + 18 × 126 × 3 + 848 × 27 = ?
Giải thích
54 × 450 + 18 × 126 × 3 + 848 × 27
= 54 × 450 + (18 × 3) × 126 + (27 × 2) × 424
= 54 × 450 + 54 x 126 + 54 × 424
= 54 × ( 450 + 126 + 424)
= 54 × 1000
= 54 000
54 × 450 + 18 × 126 × 3 + 848 × 27
= 54 × 450 + (18 × 3) × 126 + (27 × 2) × 424
= 54 × 450 + 54 x 126 + 54 × 424
= 54 × ( 450 + 126 + 424)
= 54 × 1000
= 54 000