Additions: 1 digit, Sheet 1
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3 + 5 =	7 + 2 =	5 + 2 =
6 + 1 =	4 + 2 =	1 + 2 =
2 + 7 =	8 + 1 =	9 + 0 =
4 + 5 =	7 + 2 =	3 + 5 =
5 + 2 =	5 + 3 =	4 + 4 =
3 + 3 =	3 + 4 =	4 + 3 =
1 + 2 =	8 + 0 =	7 + 2 =
3 + 4 =	3 + 5 =	5 + 4 =
2 + 2 =	3 + 6 =	5 + 1 =
3 + 2 =	6 + 1 =	7 + 2 =
4 + 5 =	6 + 3 =	3 + 3 =
4 + 4 =	4 + 4 =	5 + 5 =
6 + 1 =	7 + 2 =	8 + 1 =
4 + 4 =	6 + 4 =	2 + 8 =
4 + 3 =	2 + 2 =	4 + 2 =
3 + 6 =	6 + 2 =	7 + 1 =
2 + 6 =	4 + 2 =	5 + 1 =