Viết số thích hợp vào chỗ chấm: 1×3=… 3×1=… 0×2=… 2×
Giải thích
1 × 3 = 3 3 × 1 = 3 0 × 2 = 0 2 × 0 = 0 | 5 × 1 = 5 1 × 5 = 5 4 × 0 = 4 0 × 4 = 4 |
2 × 1 = 2 1 × 2 = 2 3 × 0 = 0 0 × 3 = 0 | 1 × 4 = 4 4 × 1 = 4 0 × 5 = 0 5 × 0 = 0 |
1 × 3 = 3 3 × 1 = 3 0 × 2 = 0 2 × 0 = 0 | 5 × 1 = 5 1 × 5 = 5 4 × 0 = 4 0 × 4 = 4 |
2 × 1 = 2 1 × 2 = 2 3 × 0 = 0 0 × 3 = 0 | 1 × 4 = 4 4 × 1 = 4 0 × 5 = 0 5 × 0 = 0 |