Multiplication & Division (2 , 10 , jumeaux)

2 x 2 = (a)  

3 x 3 = (a)  

4 x 4 = (a)  

5 x 5 = (a)  

6 x 6 = (a)  

7 x 7 = (a)  

8 x 8 = (a)  

9 x 9 = (a)  

10 x 10 = (a)  

81 ÷ 9 = (a)