Question

Tính nhẩm:

Answer 1

2 + 2 = 4                            6 + 2 =8                            

4 + 0 = 4                            10 – 7 = 3

3 + 3 = 6                             2 + 6 = 8                           

0 + 6 = 6                            10 – 9 = 1

4 + 4 = 8                            8 – 2 = 6                           

8 – 0 = 8                            6 + 3 = 9

5 + 5 = 10                          8 – 6 = 2                           

9 – 9 = 0                            9 – 4 = 5