1. Practice Doubles and 1 Group with addition.
2 x 4 = 8
6 + 1 = 7
2 x 2 = 4
1 x 6 = 6
7 x 1 = 7
1 + 1 = 2
8 + 1 = 9
2 x 3 = 6
1 + 5 = 6
2 x 1 = 2
4 + 1 = 5
9 x 1 = 9
1 + 3 = 4
2 x 5 = 10
1 + 7 = 8
5 x 1 = 5
1 x 1 = 1
9 + 1 = 10
2 + 1 = 3
1 x 8 = 8