Table 1.

Arithmetic problems presented in the non-symbolic calculation experiment and their correct and deviant results.

Operands		Results and deviant response alternatives
First	Second	1/2	1/1.7	1/1.4	1/1.2	1	1.2	1.4	1.7	2
ADDITION
6	2	4	5	6	7	8	10	11	13	16
6	4	5	6	7	8	10	12	14	17	20
14	5	9	11	13	16	19	23	27	32	38
14	11	13	15	18	21	25	30	35	42	50
SUBTRACTION
16	8	4	5	6	7	8	10	11	13	16
16	6	5	6	7	8	10	12	14	17	20
32	13	9	11	13	16	19	23	27	32	38
32	7	13	15	18	21	25	30	35	42	50
MEMORIZATION
6		2	3	4	5	6	7	8	10	12
19		9	11	13	16	19	23	27	32	38
25		13	15	18	21	25	30	35	42	50