Tính nhanh: 35,46 × 1,59 + 1,59 × 41,45 + 1,59 × 23,09
Giải thích
a) 35,46 × 1,59 + 1,59 × 41,45 + 1,59 × 23,09 = 1,59 × ( 35,46 + 41,45 + 23,09) = 1,59 × 100 = 159 | b) 0,25 × 3,58 × 400 = 0,25 × 400 × 3,58 = 100 × 3,58 = 358 |
a) 35,46 × 1,59 + 1,59 × 41,45 + 1,59 × 23,09 = 1,59 × ( 35,46 + 41,45 + 23,09) = 1,59 × 100 = 159 | b) 0,25 × 3,58 × 400 = 0,25 × 400 × 3,58 = 100 × 3,58 = 358 |