4 + 4 = ____           6 + 6 = ____           5 + 5 = ____

 

10 + 3 = ____         8 + 4 = ____           0 + 2 = ____

 

10 + 2 = ____         2 + 6 = ____           1 + 1 = ____

 

10 + 5 = ____         5 + 6 = ____           3 + 4 = ____

 

20 + 2 = ____         1 + 0 = ____           3 + 4 = ____

 

20 + 1 = ____         8 + 8 = ____           5 + 4 = ____

 

20 + 5 = ____         1 + 6 = ____           3 + 3 = ____

 

9 + 2 = ____           0 + 5 = ____           2 + 7 = ____

 

30 + 1 = ____         5 + 2 = ____           6 + 2 = ____

 

10 + 6 = ____         4 + 5 = ____           7 + 3 = ____