Počítej hbitě. Pokud potřebuješ, zaměňuj sčítance.

10 + 0 =	10 + 9 =	0 + 10 =	9 + 10 =
8 + 10 =	4 + 10 =	2 + 10 =	10 + 8 =
10 + 4 =	10 + 2 =	10 + 6 =	10 + 7 =
6 + 10 =	7 + 10 =	1 + 10 =	3 + 10 =
5 + 10 =	10 + 1 =	10 + 3 =	10 + 5 =