Viết số thích hợp vào chỗ chấm:
Giải thích
a)
0 × 2 = 0 2 × 0 = 0 | 1 × 0 = 0 0 × 1 = 0 | 0 × 4 = 0 4 × 0 = 0 | 0 × 5 = 0 5 × 0 = 0 |
b)
0 : 4 = 0 0 : 7 = 0 | 0 : 9 = 0 0 : 1 = 0 | 0 : 6 = 0 0 : 3 = 0 | 0 : 2 = 0 0 : 5 = 0 |
a)
0 × 2 = 0 2 × 0 = 0 | 1 × 0 = 0 0 × 1 = 0 | 0 × 4 = 0 4 × 0 = 0 | 0 × 5 = 0 5 × 0 = 0 |
b)
0 : 4 = 0 0 : 7 = 0 | 0 : 9 = 0 0 : 1 = 0 | 0 : 6 = 0 0 : 3 = 0 | 0 : 2 = 0 0 : 5 = 0 |