5+5+5+5 = 20
3+3+3+3=12
1+1+1+1+1+1+1+1= 8
6 + 6 + 6 = 18
2 + 2 + 2 = 6
7+7+7= 21
3 x 4 =
7 x 3 =
2 x 3 = 6
6 x 3 =
5 x 4 =
8 x 1=