1
Find all 1 pair that add up to 2 =
2
Find all 5 pairs that add up to 10 =
3
Find all 1 pair that add up to 2 =
4
Find all 5 pairs that add up to 10 =
5
Find all 3 pairs that add up to 6 =
6
Find all 4 pairs that add up to 8 =
7
Find all 4 pairs that add up to 9 =
8
Find all 4 pairs that add up to 9 =