Tính 4 × 5 : 2 25 : 5 × 3 3 × 6 : 2 3 × 3 × 1 5 × 6 : 3 9 : 3 × 2
Giải thích
4 × 5 : 2 | 25 : 5 × 3 | 3 × 6 : 2 | 3 × 3 × 3 | 5 × 6 : 3 | 9 : 3 × 2 |
= 20 : 2 = 10 | = 5 × 3 = 15 | = 18 : 2 = 9 | = 9 × 3 = 27 | = 30 : 3 = 10 | = 3 × 2 = 6 |
4 × 5 : 2 | 25 : 5 × 3 | 3 × 6 : 2 | 3 × 3 × 3 | 5 × 6 : 3 | 9 : 3 × 2 |
= 20 : 2 = 10 | = 5 × 3 = 15 | = 18 : 2 = 9 | = 9 × 3 = 27 | = 30 : 3 = 10 | = 3 × 2 = 6 |