Serie X Anticipación, atención o seriación
8, 7, 6, 5, 4, 3,.
2,1
3, 8, 13, 18, 23, 28
33,38
1, 2, 4, 8, 16, 32.
64,128
8, 8, 6, 6, 4, 4.
2,2
11 3/4, 12, 12 1/4, 12 1/2, 12 3/4.
13,13 1/4
8, 9, 12, 13, 16, 17.
20,21
16, 8, 4, 2, 1, 1/2.
1/4,1/8
31.3, 40.3, 49.3, 58.3, 67.3, 76.3.
85.3,94.3
3, 5, 4, 6, 5, 7
6,8
7, 11, 15, 16, 20, 24, 25, 29.
33,34
1/25, 1/5, 1, 5.
25,125